Faculty Profiles - YOKOYA Takayoshi

Observation of spin depolarization in half-metal CrO₂ by high-resolution spin-resolved photoemission spectroscopy

Fujiwara Hirokazu, Yokoya Takayoshi, Terashima Kensei, Sunagawa Masanori, Ogata Makoto, Yaji Koichiro, Harasawa Ayumi, Shin Shik, Wakita Takanori, Muraoka Yuji

Meeting Abstracts of the Physical Society of Japan 72 ( 0 ) 797 - 797 2017

Temperature dependent local atomic displacements in Li_x(NH₃)_yFe₂Se₂

Paris E., Simonelli L., Wakita T., Marini C., Lee J.-H., Olszewski W., Terashima K., Kakuto T., Nishimoto N., Kimura T., Kudo K., Kambe T., Nohara M., Yokoya T., Saini N.L.

Meeting Abstracts of the Physical Society of Japan 71 1843 - 1843 2016

Language：Japanese Publisher：The Physical Society of Japan

We have used temperature dependent extended x-ray absorption fine structure (EXAFS) measurements to investigate local atomic displacements in single crystals of the recently discovered ammonia-intercalated iron selenide superconductor. Using in-plane polarized EXAFS measurements at the Fe K-edge we have obtained direct information on the local Fe-Se and Fe-Fe bondlenghts and corresponding distance-distance correlation functions given by their mean square relative displacements (MSRD). We find that the chalcogen (Se) height in the intercalated system is lower than the one in the binary FeSe, suggesting compressed FeSe4 tetrahedron in the title system. Furthermore, the results reveal an anomalous change in the atomic correlations across the superconducting transition temperature Tc, appearing as a clear drop in the MSRD, suggesting hardening of the local modes similar to other classes of superconductors. This observation indicates that local atomic correlations should have some direct correlation with the superconductivity in these materials.

DOI： 10.11316/jpsgaiyo.71.2.0_1843

Electronic structure of AxFe2-ySe2 (A=K,Rb) studied by angle-resolved photoemission spectroscopy Reviewed

Sunagawa M., Shimada K., Namatame H., Taniguchi M., Suzuki K., Usui H., Kuroki K., Wakita T., Muraoka Y., Yokoya T., Terashima K., Fujiwara H., Fukura T., Takeda A., Tanaka M., Takeya H., Takano Y., Arita M.

Meeting Abstracts of the Physical Society of Japan 71 ( 0 ) 2023 - 2023 2016

Control of Fermi Level by Variation of Charge Ordering State in Yb_1-xTi_xFe₂O₄

Nagata Tomoko, Okazaki Hiroyuki, Wakita Takanori, Fukura Tetsushi, Iwata Nobuyuki, Yamamoto Hiroshi, Yokoya Takayoshi, Ikeda Naoshi

Transactions of the Materials Research Society of Japan 41 ( 3 ) 269 - 271 2016

Language：English Publisher：The Materials Research Society of Japan

Fermi level and valence state were investigated in RFe₂O₄ (R = Y, Dy, Ho, Er, Tm, Yb, Lu, Sc, or In), which shows magnetoelectric effect originating from charge and magnetic orders of Fe²⁺ and Fe³⁺. We succeeded in controlling the Fermi level of YbFe₂O₄ system by Ti⁴⁺ substitution for Yb³⁺. The variation in the ratio of Fe²⁺ to Fe³⁺ is suggested to the origin of the Fermi level variation. This report suggests the possibility of simple selection of conduction type in functional oxide.

DOI： 10.14723/tmrsj.41.269

Ca(Fe_<1-x>Rh_x)_2As_2の軟X線光電子分光(鉄系高温超伝導の物理,研究会報告)

Photoemission spectroscopy of new layered superconductor CsPbxBi4-xTe6

Okazaki Hiroyuki, Hamada Takahiro, Terashima Kensei, Iwata Keiji, Wakita Takanori, Tanaka Masashi, Takano Yoshihiko, Muraoka Yuji, Yokoya Takayoshi

Meeting Abstracts of the Physical Society of Japan 71 2253 - 2253 2016

Study of electronic states on Sr_2-xLa_xIrO₄ (x = 0.04, 0.08) : Angle-resolved photoelectron spectroscopy

Terashima K., Sunagawa M., Fujiwara H., Fujii M., Horigane K., Kobayashi K., Horie R., Akimitsu J., Muraoka Y., Yokoya T.

Meeting Abstracts of the Physical Society of Japan 71 1791 - 1791 2016

Inhomogeneous electronic state in Li_xCoO₂ (x=0.71)

Yagihara Hajime, Matsumoto Ryoya, Yosino Tubasa, Okamoto Yohei, Wakita Takanori, Yokoya Takayoshi, Iwai Chika, Miyosi Kiyotaka, Takeuti Jun, Kandyba Victor, Barinov Alexei, Saini Naurang L., Mizokawa Takasi

Meeting Abstracts of the Physical Society of Japan 71 1950 - 1950 2016

Fe 3p-3d resonant inverse photoemission spectroscopy on YbFe₂O₄

Fukura T., Wakita T., Fujiwara K., Terashima K., Sato H., Namatame H., Taniguchi M., Ikeda N., Muraoka Y., Yokoya T.

Meeting Abstracts of the Physical Society of Japan 71 2527 - 2527 2016

22pBE-10 Relationship between carrier concentration and T_c of heavily boron-doped diamond superconducting films prepared by a hot filament CVD method

Muraoka Y., Kittaka T., Inubushi S., Terashima K., Wakita T., Yokoya T.

Meeting Abstracts of the Physical Society of Japan 70 2271 - 2271 2015

21pBA-12 Observation of hole-like Fermi surface in K_xFe_<2-y>Se_2

Sunagawa M., Terashima K., Hamada K., Fujiwara H., Tanaka M., Takeya H., Takano Y., Arita M., Shimada K., Namatame H., Taniguchi M., Suzuki K., Usui H., Kuroki K., Wakita T., Muraoka Y., Yokoya T.

Meeting Abstracts of the Physical Society of Japan 70 1997 - 1997 2015

21aAE-12 Quantitative measurement of local work functions by PEEM

Wakita T., Terashima T., Muraoka Y., Yokoya T.

Meeting Abstracts of the Physical Society of Japan 70 2515 - 2515 2015

22pBE-7 Angle-resolved photoemission study of Ln(O,F)BiS_2 (Ln=La, Ce)

Terashima K., Wakita T., Sunagawa M., Fujiwara H., Hamada T., Nagao M., Watauchi S., Tanaka I., Minohara M., Horiba K., Ono K., Kumigashira H., Muro T., Okazaki H., Takano Y., Muraoka Y., Yokoya T.

Meeting Abstracts of the Physical Society of Japan 70 2268 - 2268 2015

21aCN-5 Bulk sensitive spin-resolved photoemission spectroscopy studies on CrO_2 II

Fujiwara Hirokazu, Sunagawa Masanori, Kittaka Tomoko, Ogata Makoto, Terashima Kensei, Wakita Takanori, Muraoka Yuji, Yokoya Takayoshi

Meeting Abstracts of the Physical Society of Japan 70 1421 - 1421 2015

22aPS-11 Electrical resistivity measurements of vacuum-evaporated K-doped picene films prepared at low temperature

Hamada T., Jabuchi T., Wakita T., Muraoka Y., Yokoya T.

Meeting Abstracts of the Physical Society of Japan 70 2109 - 2109 2015

22pBE-6 Soft X-ray photoemission study of CeO_xF_<1-x>BiS_2 single crystal

Wakita T, Terashima K, Hamada T, Fujiwara H, Nagao M, Watauchi S, Tanaka I, Demura S, Okazaki H, Takano Y, Mizuguchi Y, Miura O, Minohara M, Kobayashi M, Horiba K, Kumigashira H, Okada K, Wakita T, Muraoka Y, Yokoya T

Meeting Abstracts of the Physical Society of Japan 70 ( 0 ) 2267 - 2267 2015

8pBD-4 Preparation and electrical resistivity of a single-phase TaO_2 thin film

Muraoka Yuji, Fujimoto Yuki, Wakita Takanori, Yokoya Takayoshi

Meeting abstracts of the Physical Society of Japan 69 ( 2 ) 387 - 387 2014.8

9pAJ-10 Bulk sensitive spin-resolved photoemission spectroscopy studies on CrO_2

Fujiwara H., Sunagawa M., Kittaka T., Terashima K., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 69 ( 2 ) 532 - 532 2014.8

10aAS-7 PEEM observation of Ag micro-films on Si surfaces

Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 69 ( 2 ) 675 - 675 2014.8

9pAJ-9 Electronic states of LaO_<1-x>F_xBiS_2(x=0.23) studied by angle-resolved photoelectron spectroscopy

Terashima K., Sunagawa M., Fujiwara H., Hamada T., Sonoyama J., Kumigashira H., Ono K., Nagao M., Takano Y., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 69 ( 2 ) 531 - 531 2014.8

9pBD-12 Angle-Resolved Photoemission Spectroscopy on K_xFe_<2-y>Se_2

Sunagawa M., Terashima K., Hamada K., Fujiwara H., Tanaka M., Takeya H., Takano Y., Arita M., Shimada K., Namatame H., Taniguchi M., Kuroki K., Suzuki K., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 69 ( 2 ) 437 - 437 2014.8

9pBJ-7 Soft X-ray photoemission study of CeO_xF_<1-x>BiS_2

Hamada T., Sonoyama J., Fujiwara H., Demura S., Okazaki H., Takano Y., Mizuguchi Y., Miura O., Kobayashi M., Horiba K., Kumigashira H., Okada K., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 69 ( 2 ) 443 - 443 2014.8

9pBJ-11 Electrical resistivity measurements of vacuum-evaporated K-doped picene films

Hamada T., Jabuchi T., Okazaki H., Wakita T., Kambe T., Goto H., Kubozono H., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 69 ( 2 ) 444 - 444 2014.8

30aCM-9 Change of T_c due to crystallinity in superconducting diamond

Okazaki H., Wakita T., Sonoyama J., Hamada T., Kittaka T., Muraoka Y., Yokoya T., Muro T., Nakamura T., Kurihara S., Kawarada H., Yamaguchi T., Takeya H., Takano Y.

Meeting abstracts of the Physical Society of Japan 69 ( 1 ) 675 - 675 2014.3

30pAP-1 Thermal diffusion process of Ag-micro films on Si surfaces

Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 69 ( 1 ) 907 - 907 2014.3

28pBE-6 Electronic structure of BiS_2 superconductors studied by soft X-ray ARPES

Sonoyama J., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 69 ( 1 ) 628 - 628 2014.3

Conductivity and electronic state of K doped picene film

Jabuchi T., Wakita T., Kubozono Y., Kambe T., Kato T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 68 ( 2 ) 763 - 763 2013.8

PEEM observation of Ag-micro films on Si surfaces

Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 68 ( 2 ) 827 - 827 2013.8

Soft X-ray photoemlssion spectroscopy of novel BIS_2-based layered superconductors

Sonoyama J., Nagira S., Sunagawa M., Otsuka T., Kittaka T., Hamada T., Muro T., Kumigashira H., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 68 ( 2 ) 586 - 586 2013.8

Fermi surface nesting of ametallic VO_2 thin film

Muraoka Yuji, Nagao Hiroshi, Wakita Takanori, Yokoya Takayoshi, Kumigasira Hiroshi, Oshima Masaharu

Meeting abstracts of the Physical Society of Japan 68 ( 2 ) 563 - 563 2013.8

ARPES study of heavily B-doped superconducting diamond with T_c of 25K

Okazaki H., Wakita T., Sonoyama J., Hamada T., Kittaka T., Muraoka Y., Yokoya T., Muro T., Nakamura T., Kurihara S., Kawarada H., Yamaguchi T., Takeya H., Takano Y.

Meeting abstracts of the Physical Society of Japan 68 ( 2 ) 440 - 440 2013.8

Angle-Resolved Photoemission Spectroscopy on La and P co-doped CaFe_2As_2 II

Sunagawa M., Jabuchi M., Sonoyama J., Fujiwara H., Iba K., Kudo K., Nohara M., Ono K., Kumigashira H., Arita M., Shimada K., Namatame H., Taniguchi M., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 68 ( 2 ) 496 - 496 2013.8

27aXZA-1 Thermal diffusion of Ag-micro films on Si surfaces

Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 68 ( 1 ) 986 - 986 2013.3

26aXG-8 Angle-Resolved Photoemission Spectroscopy on La and P co-doping of CaFe_2As_2

Sunagawa M., Ishiga T., Tsubota K., Jabuchi T., Sonoyama J., Nagira S., Iba K., Kudo K., Nohara M., Ono K., Kumigashira H., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 68 ( 1 ) 574 - 574 2013.3

26pXF-3 Electronic structure of doped aromatic hydrocarbon-based superconductor

Jabuchi T., Wakita T., Kato T., Kubozono Y., Kambe T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 68 ( 1 ) 907 - 907 2013.3

19aFH-12 K doping dependent electronic structure of picene thin films

Jabuchi T., Okazaki H., Wakita T., Kato T., Kubozono Y., Kanbe T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 2 ) 773 - 773 2012.8

19aGB-2 Photoemission spectroscopy of new superconductor SrPt_2As_2

Sonoyama J., Wakita T., Yoshida R., Ishiga T., Thubota K., Hiramatsu C., Jabuchi T., Sunagawa M., Fujimoto Y., Nishikubo Y., Kudo K., Nohara M., Muro T., Izumi Y., Kumigashira H., Ono K., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 2 ) 477 - 477 2012.8

21aFE-3 Electronic structure of CeT_2Al_<10> (T= Fe, Ru, Os) studied by high-resolution photoemission spectroscopy III

Ishiga T., Tsubota K., Sunagawa M., Uenaka K., Yutani K., Muro Y., Takabatake T., Kumigashira H., Oshima M., Okada K., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 2 ) 572 - 572 2012.8

20aGA-12 Angle-resolved photoemission spectroscopy study of collapsed tetragonal phase in Ca(Fe_<1-x>Rh_x)_2As_2

Tsubota K., Wakita T., Nagao H., Hiramatsu C., Ishiga T., Ono K., Danura M., Kudo K., Nohara M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 2 ) 503 - 503 2012.8

20aGA-13 Angle-Resolved Photoemission Spectroscopy of Ca_<10>(Pt_4As_8)(Fe_<2-x>Pt_xAs_2)_5

Nagao H., Yoshida R., Tsubota K., Ishiga T., Jabuchi T., Sonoyama J., Kakiya S., Mitsuoka D., Kudo K., Nohara M., Jiang J., Iwasawa H., Shimada K., Namatame H., Taniguchi M., Ono K., Kumigashira H., Oshima M., Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 2 ) 503 - 503 2012.8

20aFG-8 Photoemission spectroscopy measurements of metallic VO_2 thin films induced by photo-irradiation

Muraoka Y., Nagao H., Wakita T., Yokoya T., Kumigashira H., Oshima M.

Meeting abstracts of the Physical Society of Japan 67 ( 2 ) 498 - 498 2012.8

18pFN-6 Microscopic observation of Ag micro-films on Si surfaces

Wakita T., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 2 ) 818 - 818 2012.8

20aFJ-1 Angle-resolved photoemission spectroscopy for metallic VO_2 thin films

Nagao H., Muraoka Y., Ishiga T., Tsubota K., Wakita T., Yokoya T., Ono K., Kumigashira H.

Meeting abstracts of the Physical Society of Japan 67 ( 2 ) 696 - 696 2012.8

25pYB-3 Ultrahigh-Resolution Three-Dimensional ARPES on URu_2Si_2

Yoshida R., Tsubota K., Ishiga T., Aoki D., Flouquet J., Varykhalov A., Rienks E., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 1 ) 637 - 637 2012.3

27pYA-6 Photoemission study of K_xFe_<2-y>Se_2

Fukui M., Tsubota K., Ishiga T., Yoshida R., Muro T., Takeya H., Takano Y., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 1 ) 696 - 696 2012.3

27aYH-14 Surface physical property of CrO_2 thin films prepared using a closed chemical vapor deposition method

Muraoka Y., Yoshida S., Wakita T., Hirai M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 1 ) 694 - 694 2012.3

27pYB-2 Electronic structure of CeT_2Al_<10>(T=Fe, Ru, Os) studied by high-resolution photoemission spectroscopy II

Ishiga T., Yoshida R., Nakamura Y., Tsubota K., Yutani K., Muro Y., Takabatake T., Kumigashira H., Oshima M., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 1 ) 698 - 698 2012.3

25pCK-7 PEEM study of thermal diffusion of Ag micro-films on Si surfaces

Wakita T., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 67 ( 1 ) 950 - 950 2012.3

24aGL-8 Electronic structure of Ca(Fe_<1-x>Rh_x)_2As_2 studied by angle resolved photoemission spectroscopy

Tsubota K., Yoshida R., Danura M., Kudo K., Nohara M., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 644 - 644 2011.8

21aTN-8 Inverse photoemission spectroscopy of VO_2 thin films

Nagao H., Muraoka Y., Hirai M., Wakita T., Utsumi Y., Sato H., Namatame H., Taniguchi M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 720 - 720 2011.8

24aGE-9 Preparation of heavily boron-doped superconducting diamond films by a hot-filament CVD method and characterization of their physical properties

Hiramatsu C., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 638 - 638 2011.8

24aGB-9 Local magnetic properties and electronic states of the ferromagnetic chromium oxides CrO_2 and K_2Cr_8O_<16> investigated by ^<53>Cr NMR measurements

Takeda H., Shimizu Y., Itoh M., Isobe M., Ueda Y., Yoshida S., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 633 - 633 2011.8

24aGE-7 High-resolution photoemission study of Rh_<17>S_<15> superconductor II

Fukui M., Yoshida R., Okazaki H., Muro T., Settai R., Onuki Y., Harima H., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 638 - 638 2011.8

21aGD-9 Electron carrier injection to VO_2 thin films by synchrotron radiation light irradiation

Muraoka Y., Nagao H., Wakita T., Hirai M., Yokoya T., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 459 - 459 2011.8

22pGK-8 Electrical conduction mechanism of electronic ferroelectric RFe_2O_4

Nagata T., Fukada Y., Akahama H., Funae T., Okazaki H., Yokoya T., Kambe T., Kano J, Ikeda N.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 542 - 542 2011.8

21aGM-4 Angle-Resolved Photoemission Spectroscopy on Iron-Based Superconductor Ca-Fe-Pt-As

Yoshida R., Tsubota K., Kakiya S., Kudo K., Nohara M., Hayashi H., Jiang J., Iwasawa H., Shimada K., Namatame H., Taniguchi M., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 466 - 466 2011.8

21aGC-6 Electronic structure of CeT_2Al_<10>(T=Fe,Ru,Os) studied by high-resolution photoemission spectroscopy

Ishiga T., Yoshida R., Tsubota K., Yutani K., Muro Y., Takabatake T., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 455 - 455 2011.8

24pGE-10 Preparation of the CrO_2 thin films in a closed chemical vapor deposition method and characterization of the surface physical properties of the films

Yoshida S., Muraoka Y., Wakita T., Hirai M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 654 - 654 2011.8

22pHA-10 PEEM study of diffusion of noble metal atoms on Si surfaces

Wakita T., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 2 ) 922 - 922 2011.8

正逆光電子分光によるFe(Se,Te)の電子状態研究

吉田力矢, 内海有希, 坪田幸士, 福井仁紀, 中島陽祐, 岡崎宏之, 水口佳一, 水口佳一, 高野義彦, 高野義彦, 室隆桂之, 加藤有香子, 組頭広志, 尾嶋正治, 播磨尚朝, 播磨尚朝, 相浦義弘, 相浦義弘, 佐藤仁, 佐藤仁, 井野明洋, 井野明洋, 生天目博文, 谷口雅樹, 谷口雅樹, 平井正明, 平井正明, 村岡祐治, 村岡祐治, 横谷尚睦, 横谷尚睦

物性研究 96 ( 5 ) 563 - 563 2011.8

鉄系超伝導体の正逆光電子分光

吉田力矢, 内海有希, 坪田幸士, 福井仁紀, 中島陽祐, 岡崎宏之, 水口佳一, 水口佳一, 高野義彦, 高野義彦, 高野義彦, 室隆桂之, 加藤有香子, 組頭広志, 尾嶋正治, 播磨尚朝, 播磨尚朝, 相浦義弘, 相浦義弘, 佐藤仁, 佐藤仁, 井野明洋, 井野明洋, 生天目博文, 谷口雅樹, 谷口雅樹, 平井正明, 平井正明, 村岡祐治, 村岡祐治, 横谷尚睦, 横谷尚睦

日本物理学会講演概要集 66 ( 1 ) 642 - 642 2011.3

27pGW-7 Photoemission and inverse photoemission studies on iron based superconductors

Yoshida R, Utsumi Y, Tsubota K, Fukui M, Nakajima Y, Okazaki H, Mizuguchi Y, Takano Y, Muro T, Kato Y, Kumigashira H, Oshima S, Harima H, Aiura Y, Sato H, Ino A, Namatame H, Taniguchi M, Hirai M, Muraoka Y, Yokoya T

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 642 - 642 2011.3

25aEE-4 Electronic structure of Ca(Fe_<1-x>Rh_x)_2As_2 studied by soft X-ray photoemission spectroscopy

Tsubota K., Yoshida R., Nakamura Y., Muro T., Danura M., Kudo K., Nohara M., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 524 - 524 2011.3

28aEC-2 Ultrahigh Resolution ARPES on URu_2Si_2 : Fine Structures in Photoemission Spectra

Yoshida R., Fukui M., Haga Y., Yamamoto E., Onuki Y., Malaeb Walid, Okawa M., Shin S., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 659 - 659 2011.3

25pED-12 Preparation of heavily boron-doped diamond films by a hot filament CVD method and characterization of their physical propeties

Hiramatsu C., Doi T., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 555 - 555 2011.3

28pEF-3 Preparation and electronic states of NbO_2 thin films

Muraoka Y., Hiramatsu C., Hirai M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 684 - 684 2011.3

27pTM-4 Effects of Yb or Fe site substitution of YbFe_2O_4

Nagata T., Funae T., Nakanishi A., Kano J., Kambe T., Okazaki H., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 982 - 982 2011.3

27pPSA-11 Inelastic mean free path of photoelectrons excited from Si 2p core-levels

Wakita T., Ono M., Eguchi T., Hasegawa Y., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 923 - 923 2011.3

26pED-5 Photoemission studies on the superconducting gap of filled skutterudites RPt_4Ge_<12>(R=La,Pr)

Nakamura Y., Okazaki H., Yoshida R., Takeya H., Wakita T., Hirata K., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 601 - 601 2011.3

26aHB-6 Angle-resolved photoemission spectroscopy of metallic VO_2 thin films

Nagao H., Yao Y., Muraoka Y., Wakita T., Hirai M., Kumigashira H., Oshima M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 769 - 769 2011.3

25pED-8 High-resolution photoemission study of Rh_<17>S_<15> superconductor

Fukui M., Yoshida R., Nakamura Y., Okazaki H., Kato Y., Muro T., Settai R., Onuki Y., Harima H., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 554 - 554 2011.3

26pEC-3 Photoemission spectroscopy of CeT_2Al_<10>(T=Fe,Os)

Ishiga T., Nakamura Y., Okazaki H., Yoshida R., Muro Y., Takabatake T., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 66 ( 1 ) 597 - 597 2011.3

Surface physical property of the CrO2 thin films prepared using a closed chemical vapor deposition method Reviewed

Y. Muraoka, S. Yoshida, T. Wakita, M. Hirai, T. Yokoya

Materials Research Society online Proceedings library 1406 2011

坪田幸士, 吉田力矢, 福井仁紀, 中村祥明, 室隆桂之, 檀浦匡隆, 工藤一貴, 野原実, 平井正明, 村岡祐治, 横谷尚睦

物性研究 96 ( 5 ) 576 - 576 2011

11系超伝導体の高分解能光電子分光

福井仁紀, 岡崎宏之, 岡崎宏之, 吉田力矢, 中村祥明, 高野義彦, 高野義彦, 水口佳一, 水口佳一, 平井正明, 平井正明, 村岡祐治, 村岡祐治, 村岡祐治, 横谷尚睦, 横谷尚睦, 横谷尚睦

日本物理学会講演概要集 65 ( 2 ) 453 - 453 2010.8

24pRE-3 Fermi Surface observation for the metallic VO_2 thin films

Yao Y., Muraoka Y., Wakita T., Hirai M., Kumigashira H., Oshima M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 702 - 702 2010.8

24aWB-9 Bulkand surface physical properties of CrO_2 thin films prepared using a Cr_8O_<21> precursor in a closed chemical vapor deposition system

Muraoka Y., Iwai K., Yoshida S., Wakita T., Hirai M., Yokoya T., Kato Y., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 542 - 542 2010.8

24aWJ-8 Electronic Structure of YbFe_2O_4 Studied by Soft X-ray Photoemission Spectroscopy

Okazaki H., Fukui M., Muro T., Wakita T., Muraoka Y., Hirai M., Akahama H., Ikeda N., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 550 - 550 2010.8

24aWB-10 Preparation of the CrO_2 thin films from a Cr_8O_<21> precursor in a closed chemical vapor deposition system

Yoshida S., Muraoka Y., Hirai M., Yokoya T., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 542 - 542 2010.8

24aPS-28 Technique of photoemission spectroscopy for small crystals using high brilliance synchrotron radiation

Muro T., Kato Y., Matsushita T., Kinoshita T., Watanabe Y., Sekiyama A., Sugiyama H., Kimura M., Komori S., Suga S., Okazaki H., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 560 - 560 2010.8

25pWJ-9 Laser Angle-Resolve Photoemission Spectroscopy on URu_2Si_2 II

Yoshida R., Nakamura Y., Fukui M., Haga Y., Yamamoto E., Onuki Y., Okawa M., Shin S., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 603 - 603 2010.8

25aPS-101 Photoemission spectroscopy of Si : effects of empty states

Wakita T., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 716 - 716 2010.8

23pRG-3 Soft x-ray angle resolved photoemission technique for small crystals

Muro T., Kato Y., Matsushita T., Kinoshita T., Watanabe Y., Sekiyama A., Sugiyama H., Kimura M., Komori S., Suga S., Okazaki H., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 682 - 682 2010.8

25aWJ-12 Electronic state of filed skutterudite superdconductor RPt_4Ge_<12>(R=La,Pr)

Nakamura Y., Okazaki H., Yoshida R., Wakita T., Hirai M., Muraoka Y., Takeya H., Hirata K., Okawa M., Shin S., Watanabe S., Chen C.-T., Kumigashira H., Oshima M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 586 - 586 2010.8

21pGA-9 Phase transitions of strongly correlated materials studies by Ultrahigh-resolution photoemission spectroscopy

Yokoya Takayoshi

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 623 - 623 2010.3

21pGF-4 Laser Angle-Resolve Photoemission Spectroscopy on URu_2Si_2

Yoshida R., Nakamura Y., Fukui M., Haga Y., Yamamoto E., Onuki Y., Okawa M., Shin S., Watanabe S., Chen C. T., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 630 - 630 2010.3

20aPS-86 Optimization of preparation conditions from Cr_8O_<21> precursors for CrO_2 thin films

Yoshida S., Iwai K., Muraoka Y., Hirai M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 540 - 540 2010.3

23pHL-2 Angle-resolved photoemission spectroscopy of metallic VO_2 thin films

Yao Y., Okazaki H., Muraoka Y., Wakita T., Hirai M., Yokoya T., Kumigashira H., Oshima M.

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 809 - 809 2010.3

23pHL-3 Angle resolved resonant photoemission of Si(111)1x1 H-terminated surfaces

Wakita T., Ono M., Eguchi T., Okuda T., Harasawa A., Matsuda I., Hasegawa Y., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 810 - 810 2010.3

20aGE-2 Photoemission study of Rh_<17>S_<15> superconductor

Fukui M., Yoshida R., Nakamura Y., Kato Y., Muro T., Settai R., Onuki Y., Harima H., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 528 - 528 2010.3

20aGD-8 Superconducting gap of filled skutterudite supercnductor PrPt_4Ge_<12> studied by ultrahigh resolution laser photoemission spectroscopy

Nakamura Y., Okazaki H., Yoshida R., Wakita T., Hirai M., Muraoka Y., Takeya H., Hirata K., Okawa M., Shin S., Watanabe S., Chen C. -T, Kumigashira H., Oshima M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 527 - 527 2010.3

21aGR-10 The Study of Electronic Structure of Potassium Doped Picene by Using Photoemission Spectroscopy

Okazaki H., Wakita T., Muraoka Y., Hirai M., Lee X., Mitamura H., Kawasaki N., Kaji Y., Kubozono Y., Yamanari Y., Kanbe T., Yokoya T.

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 870 - 870 2010.3

21pGA-9 Phase transitions of strongly correlated materials studies by Ultrahigh-resolution photoemission spectroscopy

Yokoya Takayoshi

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 758 - 758 2010.3

23aGE-1 Preparation of CrO_2 thin films using Cr_8O_<21> precursors and their surface properties

Muraoka Y., Iwai K., Wakita T., Hirai M., Yokoya T., Kato Y., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 668 - 668 2010.3

Preparation of the CrO2 thin films using a Cr8O21 precursor Reviewed

Y. Muraoka, K. Iwai, S. Yoshida, T. Wakita, M. Hirai, T. Yokoya, Y. Kato, T. Muro, Y. Tamenori

Materials Research Society online Proceedings library 1292 2010

軟X線光電子分光で見た鉄カルコゲナイド系超伝導体の電子状態

吉田力矢, 岡崎宏之, 岡崎宏之, 中村祥明, 土居智彰, 矢尾裕一郎, 水口佳一, 水口佳一, 高野義彦, 高野義彦, 竹屋浩幸, 平田和人, 組頭広志, 組頭広志, 尾嶋正治, 尾嶋正治, 室隆桂之, 加藤有香子, 播磨尚朝, 播磨尚朝, 脇田高徳, 脇田高徳, 平井正明, 平井正明, 村岡祐治, 村岡祐治, 横谷尚睦, 横谷尚睦

日本物理学会講演概要集 64 ( 2 ) 458 - 458 2009.8

26aRL-9 Photoemission spectroscopy of filled-skutterudite PrPt_4Ge_<12> superconductor

Nakamura Y., Okazaki H., Yoshida R., Wakita T., Hirai M., Muraoka Y., Takeya H., Hirata K., Okawa M., Shin S., Watanabe S., Chen C. -T., Kumigashira H., Oshima M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 475 - 475 2009.8

28aTJ-11 Preparation of surface metallic CrO_2 thin films

Muraoka Y., Iwai K., Wakita T., Hirai M., Yokoya T., Kato Y., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 567 - 567 2009.8

28aYD-3 The Study of Electronic Structure of Polycyclic Aromatic Hydrocarbons Picene by Using Photoemission Spectroscopy

Okazaki H., Muro T., Tamenori Y., Muraoka Y., Hirai M., Kawasaki N., Kaji Y., Kubozono Y., Yamanari Y., Kanbe T., Yokoya T.

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 788 - 788 2009.8

26aXA-4 Angle-resolved photoemission spectroscopy measurements of VO_2 thin films

Yao Y., Muraoka Y., Wakita T., Hirai M., Yokoya T.

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 629 - 629 2009.8

バルク敏感光電子分光法によるNi₅₀Mn_x‐50In_x組成依存性

吉田力矢, 岡崎宏之, 伊東航, 梅津理恵, 貝沼亮介, 石田清仁, 鹿又武, 大川万里生, 石坂香子, SHIN S, 平井正明, 村岡祐治, 横谷尚睦

日本物理学会講演概要集 64 ( 1 ) 500 2009.3

28pTH-2 Composition Dependence of Ni_<50>Mn_<x-50>In_x Studied by Bulk-Sensitive Photoemission Spectroscopy

Yoshida R, Okazaki H, Ito W, Umetsu R, Kainuma R, Ishida K, Kanomata T, Okawa M, Ishizaka K, Shin S, Hirai M, Muraoka Y, Yokoya T

Meeting abstracts of the Physical Society of Japan 64 ( 1 ) 500 - 500 2009.3

30pTC-7 Electronic structure of FeSe superconductor

Yoshida R, Wakita T, Okazaki H, Mizuguchi Y, Tsuda S, Takano Y, Takeya H, Hirata K, Muro T, Okawa M, Ishizaka K, Shin S, Harima H, Hirai M, Muraoka Y, Yokoya T

Meeting abstracts of the Physical Society of Japan 64 ( 1 ) 662 - 662 2009.3

FeSe超伝導体の電子状態

吉田力矢, 脇田高徳, 脇田高徳, 岡崎宏之, 水口佳一, 水口佳一, 水口佳一, 津田俊輔, 津田俊輔, 高野義彦, 高野義彦, 高野義彦, 竹屋浩幸, 平田和人, 室隆桂之, 大川万里生, 石坂香子, SHIN S, 播磨尚朝, 播磨尚朝, 平井正明, 平井正明, 平井正明, 村岡祐治, 村岡祐治, 村岡祐治, 横谷尚睦, 横谷尚睦, 横谷尚睦, 津田俊輔

日本物理学会講演概要集 64 ( 1 ) 662 2009.3

30aTL-3 Photoemission study of silicon : boron concentration dependence

Wakita T., Okazaki H., Saeki K., Ono M., Eguchi T., Okuda T., Harasawa A., Matsuda I., Hasegawa Y., Takano Y., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 64 ( 1 ) 654 - 654 2009.3

29pVA-6 Photoemission spectroscopy of MnO_2 polymorph

Muraoka Y., Tajima M., Wakita T., Hirai M., Yokoya T., Kato Y., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 64 ( 1 ) 756 - 756 2009.3

29pVA-1 Photoemission spectroscopy of the surface of CrO_2 thin film grown on TiO_2(100) substrate

Iwai K., Muraoka Y., Wakita T., Hirai M., Yokoya T., Kato Y., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 64 ( 1 ) 755 - 755 2009.3

30aTL-2 Observation of the electronic-structure evolution across metal-insulator transition of heavily B-doped diamond by photoemission spectroscopy

Okazaki H., Arakane T., Sugawara K., Sato T., Takahashi T., Wakita T., Muraoka Y., Hirai M., Takano Y., Ishii S., Iriyama S., Kawarada H., Yokoya T.

Meeting abstracts of the Physical Society of Japan 64 ( 1 ) 654 - 654 2009.3

27pYE-8 Resonant Photoemission Spectroscopy of Superconducting Graphite Intercalation Compounds CaC_6 Reviewed

Okazaki H., Takano Y., Tomioka F., Takenaka A., Toyoda M., Oguchi T., Yokoya T., Yoshida R., Iwai K., Noami K., Muro T., Nakamura T., Wakita T., Muraoka Y., Hirai M.

Meeting Abstracts of the Physical Society of Japan 64 ( 0 ) 783 - 783 2009

Electronic Structure of Superconducting FeSe Studied by High-Resolution Photoemission Spectroscopy

Rikiya Yoshida, Takanori Wakita, Hiroyuki Okazaki, Yoshikazu Mizuguchi, Shunsuke Tsuda, Yoshihiko Takano, Hiroyuki Takeya, Kazuto Hirata, Takayuki Muro, Mario Okawa, Kyoko Ishizaka, Shik Shin, Hisatomo Harima, Masaaki Hirai, Yuji Muraoka, Takayoshi Yokoya

J. Phys. Soc. Jpn. 78, 034708 (2009) 64 ( 1 ) 34708 - 034708-4 2008.11

Language：Japanese Publishing type：Internal/External technical report, pre-print, etc. Publisher：社団法人日本物理学会

We have performed soft x-ray and ultrahigh-resolution laser-excited 
photoemission measurements on tetragonal FeSe, which was recently identified as 
a superconductor. Energy dependent study of valence band is compared to band 
structure calculations and yields a reasonable assignment of partial densities 
of states. However, the sharp peak near the Fermi level slightly deviates from 
the calculated energy position, giving rise to the necessity of self-energy 
correction. We have also performed ultrahigh-resolution laser photoemission 
experiment on FeSe and observed the suppression of intensity around the Fermi 
level upon cooling.

DOI： 10.1143/JPSJ.78.034708

21aTC-9 Photoemission spectroscopy in molecular conductor TPP[Fe(Pc)(CN)_2]_2

Hanasaki N, Tanabe M, Wakita T, Muraoka Y, Yokoya T, Nogami Y, Matsuda M, Tajima H, Taketsugu T, Yu Derrick Ethelbhert C, Naito T, Inabe T

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 745 - 745 2008.8

23pQC-4 Ultrahigh resolution laser photoemission spectroscopy on noncentrosymmetric superconductor Li_2(Pt_xPd_<1-x>)_3B

Kaji K., Shimojima T., Sakaguchi H., Kiss T., Ishizaka K., Togashi T., Wang X.-Y., Chen C. T., Tsuda S., Takeya H., Hirata K., Yokoya T., Watanabe S., Shin S.

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 577 - 577 2008.8

21aYG-13 Laser Photoemission Study on Ferromagnetic Shape Memory Alloy Ni_<50>Mn_<x-50>In_x

Yoshida R., Okazaki H., Kainuma R., Ishida K., Kanomata T., Ishizaka K., Shin S., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 640 - 640 2008.8

21pYG-1 Electronic structure of the hollandite-type titanium oxides K_xTi_8O_<16>

Noami K., Muraoka Y., Wakita T., Hirai M., Muro T., Tamenori Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 645 - 645 2008.8

20aQE-7 Photoemission study of silicon : boron concentration dependence

Wakita T., Okazaki H., Saeki K., Ono M., Eguchi T., Okuda T., Harasawa A., Matsuda I., Hasegawa Y., Takano Y., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 441 - 441 2008.8

20aQG-3 Laser Photoemission Study on Ferromagnetic Shape Memory Alloy Ni_<50>Mn_<x-50>In_x

Yoshida R., Okazaki H., Kainuma R., Ishida K., Kanomata T., Ishizaka K., Shin S., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 355 - 355 2008.8

22pQA-16 Study of the electronic state of VO_2 thin films grown on TiO_2 (001) substrates

Saeki K., Muraoka Y., Wakita T., Hirai M., Yokoya T., Eguchi R., Shin S., Senba Y., Ohashi H., Shimada K.

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 549 - 549 2008.8

23aYG-11 Angle-resolved photoemission spectroscopy of VO_2 thin films

Saeki K., Muraoka Y., Wakita T., Hirai M., Yokoya T., Eguchi R., Shin S.

Meeting abstracts of the Physical Society of Japan 63 ( 1 ) 691 - 691 2008.2

25pRH-9 High-resolution photoemission spectroscopy of heavily B-doped diamond : Electronic structure evolution across metal-insulator transition

Okazaki H., Sugawara K., Sato T., Takahashi T., Wakita T., Muraoka Y., Hirai M., Takano Y., Ishii S., Iriyama S., Kawarada H., Yokoya T.

Meeting abstracts of the Physical Society of Japan 63 ( 1 ) 616 - 616 2008.2

25pRH-10 Boron-concentration-dependence of electronic structure of Si

Wakita T., Okazaki H., Takano Y., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 63 ( 1 ) 617 - 617 2008.2

23pYB-14 Laser Photoemission Spectroscopy on Noncentrosymmetric Superconductor Mg_<10>Ir_<19>B_<16>

Yoshida R., Okazaki H., Li Z., Luo J.L., Muro T., Shin S., Ishizaka K., Zheng G.-q., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 63 ( 1 ) 531 - 531 2008.2

23pYB-10 Composition dependence of superconducting symmetry of Li_2(Pt_xPd_<1-x>)_3B studied by laser photoemission spectroscopy

Kaji K., Shimojima T., Kiss T., Ishizaka K., Watanabe S., Togashi T., Wang X.-Y., Chen C.T., Tsuda S., Takeya H., Hirata K., Yokoya T., Shin S.

Meeting abstracts of the Physical Society of Japan 63 ( 1 ) 530 - 530 2008.2

24aPS-43 Synthesis and physical properties of the hollandite (NH_4)_xMn_8O_<16> II

Muraoka Y., Tajima T., Wakita T., Hirai M., Yokoya T., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 63 ( 1 ) 580 - 580 2008.2

Education and Training Program for Graduate School Student with Synchrotron Radiation Facility

HARADA Isao, IKEDA Naoshi, YOKOYA Takayoshi

21 ( 1 ) 20 - 25 2008.1

21aWF-4 Electronic structure of superconducting graphite intercalation compound CaC_6 by high-resolution photoemission spectroscopy Reviewed

Okazaki H., Takano Y., Takenaka A., Toyoda M., Oguchi T., Yokoya T., Yoshida R., Iwai K., Noami K., Muro T., Nakamura T., Muraoka Y., Hirai M., Tomioka H.

Meeting Abstracts of the Physical Society of Japan 63 ( 0 ) 747 - 747 2008

VO₂/TiO₂(001)における界面反応

佐伯邦成, 村岡祐治, 村岡祐治, 脇田高徳, 平井正明, 横谷尚睦, 横谷尚睦, 江口律子, 辛埴, 仙波泰徳, 大橋治彦, 島田賢也

応用物理学会中国四国支部・日本物理学会中国支部・四国支部・日本物理教育学会中国四国支部支部学術講演会講演予稿集 2008 2008

VO₂/TiO₂界面の電子状態

村岡祐治, 村岡祐治, 佐伯邦成, 江口律子, 辛埴, 横谷尚睦, 横谷尚睦, 仙波泰徳, 大橋治彦

応用物理学関係連合講演会講演予稿集 55th ( 2 ) 2008

21pWH-2 Synthesis and physical properties of the hollandite (NH_4)_xMn_8O_<16>

Muraoka Y., Tajima T., Wakita T., Hirai M., Yokoya T., Muro T., Tamenori Y.

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 555 - 555 2007.8

22pWH-10 X-ray Photoelectron Spectroscopy and Electron Excited Soft X-ray Emission Spectroscopy on Li_2Pt_3B

Yoshida R., Okazaki H., Tajima M., Muraoka Y., Hirai M., Muro T., Takeya H., Hirata K., Hase I., Yokoya T.

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 608 - 608 2007.8

21aTK-4 Electronic state of the hollandite-type manganese oxide (NH_4)_xMn_8O_<16>

Tajima M., Muraoka Y., Wakita T., Hirai M., Muro T., Tamenori T., Yokoya T.

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 718 - 718 2007.8

21aWH-11 Thickness dependence of the metal-to-insulator transition for VO_2 thin films on TiO_2(001) substrates

Saeki K., Muraoka Y., Wakita T., Hirai M., Yokoya T., Eguchi R., Shin S., Senba Y., Ohashi H.

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 513 - 513 2007.8

22aTQ-10 Study of low temperature superconductor Li_2Pt_3B with NEW laser excited ultrahigh resolution photoemission spectroscopy

Kaji K., Shimojima T., Kiss T., Ishizaka K., Watanabe S., Togashi T., Wans X. -Y., Chen C. T., Tsuda S., Takeya H., Hirata K., Yokoya T., Shin S.

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 745 - 745 2007.8

21pXP-12 形状記憶合金TiNi-2Feの光電子分光による電子状態の研究(液体金属,領域6,金属,超低温,超伝導・密度波)

馬場輝久, 横谷尚睦, Chainani A., 松波雅治, 江口律子, 仙波泰徳, 大橋治彦, 木須孝幸, 下志万貴博, 石坂香子, 富樫格, Wang X. -Y., Chen C. T., 渡部俊太郎, 福田隆, 掛下知行, 辛埴

日本物理学会講演概要集 62 ( 2 ) 807 - 807 2007.8

24pXA-5 Photoemission spectroscopy of heavily boron-doped silicon

Wakita T., Okazaki H., Takano Y., Hirai M., Muraoka Y., Yokoya T.

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 666 - 666 2007.8

24pXA-4 B-doped Diamond and Carbon Nanotube

Takano Y., Okutsu T., Ogawara S., Watanabe T., Tomioka F., Ishii S., Ueda S., Tsuda S., Yamaguchi T., Yokoya T., Kawarada H.

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 665 - 665 2007.8

SPring-8における超伝導体の電子状態研究 Invited Reviewed

横谷尚睦

光学 36 ( 7 ) 387 - 389 2007.7

18pRD-1 Inverse photoemission spectroscopy of heavily B-doped superconducting diamond

Okazaki H., Mukaegawa Y., Wakita T., Yakoya T., Muraoka Y., Hirai M., Sato J., Namatame H., Taniguchi M., Takano Y., Iriyama S., Takenouchi T., Kawarada H., Oguchi T.

Meeting abstracts of the Physical Society of Japan 62 ( 1 ) 766 - 766 2007.2

19aPS-103 Thickness dependence of the metallic state in a VO_2 thin film

Muraoka Y., Saeki K., Yokoya T., Eguchi R., Shin S., Senba Y., Ohashi H.

Meeting abstracts of the Physical Society of Japan 62 ( 1 ) 580 - 580 2007.2

19aWF-4 Low energy photoemission spectroscopic study on boron-doped diamond

Ishizaka K., Eguchi R., Tsuda S., Yokoya T., Chainani A., Kiss T., Shin S., Togashi T., Watanabe S., Chen C.T., Zhang C.Q., Takano Y., Nagao M., Sakaguchi I., Takenouchi T., Kawarada H.

Meeting abstracts of the Physical Society of Japan 62 ( 1 ) 545 - 545 2007.2

19aWF-5 Soft x-ray angle-resolved photoemission spectroscopy of heavily boron-doped dimaond Reviewed

Yokoya T., Oguchi T., Okazaki H., Nakamura T., Muro T., Matushita T., Takano Y., Nagao M., Takenouchi T., Kawarada H.

Meeting Abstracts of the Physical Society of Japan 62 ( 0 ) 545 - 545 2007

High-resolution photoemission spectroscopy of low-Tc superconductors

T. Yokoya, A. Chainani, S. Shin

Lecture Notes in Physics 715 187 - 212 2007

Language：English Publishing type：Book review, literature introduction, etc.

The high-resolution photoemission spectroscopy of conventional superconductors is reviewed. It is shown that with the presently available resolution (0.360 meV using laser excitation) the gap structure (like two gaps in MgB2 or an anisotropic gap in CeRu2) can be resolved with a high degree of accuracy. It is pointed out that the use of low-photon-energy laser excitation (10 eV or less) is an alternative way (as compared to the use of high photon energies) to make more bulk-sensitive measurements with photoemission spectroscopy. © 2007 Springer.

DOI： 10.1007/3-540-68133-7_7

Ultrahigh-Resolution Photoemission Spectroscopy and Study of Electronic Structures of Solids. Direct Observation of the Superconducting Gap in MgB2 as an Example.:Direct Observation of the Superconducting Gap in MgB₂ as an Example

VO₂極薄膜の電子状態

佐伯邦成, 村岡祐治, 脇田高徳, 平井正明, 横谷尚睦, 江口律子, 辛埴, 仙波泰徳, 大橋治彦

応用物理学会中国四国支部・日本物理学会中国支部・四国支部・日本物理教育学会中国四国支部支部学術講演会講演予稿集 2007 2007

25pZL-3 Laser-excited angle-resolved photoemission study of the superconducting cobalt oxide superconductor II

Shimojima T., Ishizaka K., Kiss T., Yokoya T., Shin S., Zhang C.Q., Chen C.T., Togashi T., Watanabe S., Badica P., Yamada K., Togano K.

Meeting abstracts of the Physical Society of Japan 61 ( 2 ) 503 - 503 2006.8

高濃度ホウ素ドープダイヤモンド超伝導体の軟X線角度分解光電子分光 Invited Reviewed

横谷尚睦

放射光 19 218 - 222 2006.7

30aRB-2 Temperature dependent Luttinger surfaces

Ito Takahiro, Chainani Ashish, Haruna Takao, Kanai Kaname, Yokoya Takayoshi, Shin Shik, Kato Reizo

Meeting abstracts of the Physical Society of Japan 61 ( 1 ) 845 - 845 2006.3

30aUF-10 Fermi surface of superconducting cobalt oxide superconductor : Laser-excited angle-resolved photoemission spectroscopy

Shimojima T., Kiss T., Ishizaka K., Tsuda S., Yokoya T., Shin S., Togashi T., Zhang C., Chen C.T., Watanabe S., Badica P., Yamada K., Togano K.

Meeting abstracts of the Physical Society of Japan 61 ( 1 ) 651 - 651 2006.3

30aRA-5 Hole-concentration dependence of superconducting gap and pseudogap in (Bi,Pb)_2(Sr,La)_2CuO_<6+δ>

Kondo T., Takeuchi T., Kitao T., Kaga H., Yokoya T., Tsuda S., Shin S.

Meeting abstracts of the Physical Society of Japan 61 ( 1 ) 642 - 642 2006.3

28aXE-5 Electronic properties of Al-based quasicrystals and approximants

Iwano S., Takenaka R., Tamura R., Takeuchi S., Kiss T., Yokoya T., Shin S., Togashi H., Chen C., Watanabe S.

Meeting abstracts of the Physical Society of Japan 61 ( 1 ) 774 - 774 2006.3

27aTD-7 Laser-excited photoemission study of magnetic superconductor ErNi_2B_2C : dip structure in temperature dependence of superconducting order parameter

Baba T., Yokoya T., Tsuda S., Kiss T., Shimojima T., Shin S., Takeya H., Watanabe T., Nohara M., Takagi H., Togashi T., Zhang C., Chen C.T., Watanabe S.

Meeting abstracts of the Physical Society of Japan 61 ( 1 ) 510 - 510 2006.3

27aTD-11 Angle-resolved photoemission spectroscopy of boron-doped CVD dimaond films Reviewed

Yokoya T., Matushita T., Takata Y., Tokushima T., Shin S., Takano Y., Nagao M., Takenouchi T., Kawarada H., Oguchi T., Okazaki H., Kawada J., Motomitsu K., Nakamura J., Yamada N., Nakamura T., Muro T., Tamenori Y.

Meeting Abstracts of the Physical Society of Japan 61 ( 0 ) 511 - 511 2006

19aPS-52 Laser-excited photoemission spectroscopic study on Li_2Pd_3B

Tsuda S., Yokoya T., Kiss T., Shimojima T., Ishizaka K., Shin S., Togashi T., Watanabe S., Chen C. T., Zhang C. Q., Takeya H., Hirata K.

Meeting abstracts of the Physical Society of Japan 60 ( 2 ) 381 - 381 2005.8

20aYH-12 Uniaxial magnetic anisotropy in La_<1-x>Sr_xMnO_3 thin films grown on atomically stepped substrates

Taniuchi T., Yokoya T., Wakita T., Kumigashira H., Oshima M., Akinaga H., Lippmaa Mikk, Kawasaki M., Koinuma H., Ono K.

Meeting abstracts of the Physical Society of Japan 60 ( 2 ) 425 - 425 2005.8

20aYJ-1 The electronic structure of Ca_<1-x>Li_xPd_3O_4 studied by soft x-ray photoemission and absorption spectroscopies

Yokoya T., Muro T., Shibazaki S.

Meeting abstracts of the Physical Society of Japan 60 ( 2 ) 426 - 426 2005.8

21pXD-10 Angle-resolved photoemission spectroscopy of superconducting cobalt oxide superconductor

Shimojima T., Tsuda S., Kiss T., Ishizaka K., Yokoya T., Shin S., Badica Petre, Yamada K., Togano K.

Meeting abstracts of the Physical Society of Japan 60 ( 2 ) 486 - 486 2005.8

20pYG-7 The electronic structure of B-doped superconducting diamond films studied with synchrotron photoemission spectroscopy

Yokoya Takayoshi

Meeting abstracts of the Physical Society of Japan 60 ( 2 ) 457 - 457 2005.8

19pYK-2 High-resolution photoemission spectroscopy of Al-based quasicrystals and approximants

Iwano S., Tamura R., Takeuchi S., Kiss T., Yokoya T., Shin S.

Meeting abstracts of the Physical Society of Japan 60 ( 2 ) 634 - 634 2005.8

19aPS-45 Magnetism and superconductivity in borocarbides RNi_2B_2C : laser-excited photoemission spectroscpy

Baba T., Yokoya T., Tsuda S., Kiss T., Shin S., Watanabe T., Nohara M., Takagi H., Takeya H., Togashi T., Chen C. T., Zhang C. Q., Watanabe S.

Meeting abstracts of the Physical Society of Japan 60 ( 2 ) 379 - 379 2005.8

24pWF-10 Electronic structure and thermoelectric power of layered cobalt oxides

Kitao T, Takeuchi T, Kondo T, Funahashi R., Mikami M, Shikano M, Campuzano J C, Shin S, Yokoya T, Mizutani U

Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 507 - 507 2005.3

25pWF-14 High resolution photoemission spectroscopy of superconductiong Na_<0.35>CoO_2・1.3H_2O

Shimojima T., Tsuda S., Kiss T., Yokoya T., Ishizaka K., Shin S., Badica P., Togano K., Yamada K.

Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 561 - 561 2005.3

26pXP-9 Magnetic domain observation in La_<1-x>Sr_xMnO_3 thin films grown on atomically stepped substrates by photoelectron emission microscopy.

Taniuchi T., Yokoya T., Wakita T., Kumigashira H., Oshima M., Akinaga H., Lippmaa Mikk, Kawasaki M., Koinuma H., Ono K.

Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 710 - 710 2005.3

25pWA-4 Momentum- and energy-dependence of ARPES spectral shape in(Bi,Pb)_2(Sr,La)_2CuO_<6+δ>

Kondo T., Takeuchi T., Yokoya T., Tsuda S., Shin S., Mizutani u.

Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 553 - 553 2005.3

25pWE-14 low-temperature ultrahigh-resolution ARPES study of YNi_2B_2C

Baba T., Yokoya T., Tsuda S., Shin S., Watanabe T., Nohara M., Takagi H., Ogichi T.

Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 558 - 558 2005.3

24aWA-9 Direct observation of superconducting gap on layered nitride superconductor ZrNCl_<1-x> with UV-laser excited photoemission spectroscopy

Tsuda S., Kiss T., Yokoya T., Ishizaka K., Shin S., Togashi T., Watanabe S., Chen C. T., Zhang C., Ishihara T., Yamanaka S.

Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 488 - 488 2005.3

24aWA-7 Laser photoemission study of superconducting boron-doped diamond thin film

Ishizaka K., Eguchi R., Tsuda S., Kiss T., Yokoya T., Shin S., Togashi T., Watanabe S., Chen C.T., Zhang C., Takano Y., Nagao M., Sakaguchi I., Tachiki M., Hatano, Takenouchi T., Koabayashi K., Umezawa H., Kawarada H.

Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 487 - 487 2005.3

25aXQ-7 Photoemission study of new material YbGaGe using synchrotron radiation

Yamamoto K., Horiba K., Matsunami M., Taguchi M., Takata Y., Chainani A., Mimura K., Yokoya Y., Tsujii N., Shin S.

Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 694 - 694 2005.3

24pXP-5 New Screening effect in Hard X-ray Cu 2p Core-Level Photoemission Spectroscopy

Taguchi M, Chainani A, Horiba K, Takata Y, Yabashi M, Tamasaku K, Nishino Y, Miwa D, Ishikawa T, Matsunami M, Yamamoto K, Takeuchi T, Shin S, Yokoya T, Ikenaga E, Kobayashi K, Mochiku T, Hirata K, Hori J, Ishii K, Nakamura F, Suzuki T

Meeting Abstracts of the Physical Society of Japan 60 ( 0 ) 684 - 684 2005

24aWA-8 The electronic structure of B-doped superconducting diamond films studied with hard x-ray photoemission spectroscopy

Yokoya T, Nagao M, Sakaguchi I, Tachiki M, Hatano T, Takenouchi T, Kobayashi K, Umezawa H, Kawarada H, Ikenaga E, Kobata M, Kobayashi K, Takeuchi A, Awaji A, Nakamura T, Muro T, Takano Y

Meeting Abstracts of the Physical Society of Japan 60 ( 0 ) 488 - 488 2005

19pYD-4 Electron-phonon coupling in metallic boron-doped diamond

Ishizaka K, Zhang C. Q, Takano Y, Nagao M, Sakaguchi I, Tachiki M, Hatano T, Takenouchi T, Koabayashi K, Umezawa H, Kawarada H, Eguchi R, Tsuda S, Kiss T, Yokoya T, Shin S, Togashi T, Watanabe S, Chen C. T

Meeting Abstracts of the Physical Society of Japan 60 ( 0 ) 571 - 571 2005

レーザー励起光電子分光によるボロンドープ超伝導ダイヤモンド薄膜の研究

石坂香子, 江口律子, 木須孝幸, 横谷尚睦, 富樫格, CHEN C. T., ZHANG C., 高野義彦, 竹之内智大

応用物理学関係連合講演会講演予稿集 52nd ( 1 ) 2005

12aXC-8 ARPES study of quasi-one-dimensional conductor K_<0.3>MoO_3

Ando H., Tsuda S., Eguchi R., Shin S., Kisu T., Yokoya T., Eguchi T., Nohara M., Takagi H.

Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 629 - 629 2004.8

13aPS-113 Sub-meV photoemission spectroscopic study on the superconducting gap of newly discovered superconductors

Tsuda S, Yokoya T, Kiss T, Shin S, Togashi T, Watanabe S, Chen C, Uchiyama Y, Lee S, Tajima S, Otani S

Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 486 - 486 2004.8

14pRC-8 low-temperature ultrahigh-resolution ARPES study of YNi_2B_2C

Baba T, Yokoya T, Tsuda S, Shin S, Watanabe T, Nohara M, Takagi H, Ogichi T

Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 533 - 533 2004.8

14pRC-9 The electronic structure of new superconductor Li_2Pd_3B

Yokoya T., Muro T., Takeya H., Hirata K., Togano K.

Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 533 - 533 2004.8

14pRC-12 Laser-excited ultrahigh-resolution photoemission study of Ba_8Si_<46>

Shimojima T, Kiss T, Yokoya T, Shin S, Togashi T, Chen C, Watanabe S, Fukuoka H, Yamanaka S

Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 534 - 534 2004.8

13pRA-3 Temperature and hole concentration dependence of electrical resistivity in (Bi, Pb)_2(Sr, La)_2CuO_<6+δ> evaluation by ARPES measurement

Kondo T, Takeuchi T, Yokoya T, Tsuda S, Shin S, Mizutani U

Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 490 - 490 2004.8

13pRB-4 Laser-excited ultrahigh-resolution photoemission spectroscopy of pyrochlore superconductors

Shimojima T, Yokoya T, Kiss T, Shin S, Togashi T, Chen C, Watanabe S, Yonezawa S, Muraoka Y, Hiroi Z

Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 493 - 493 2004.8

14pPSB-12 Thermal expansion of YbGaGe system

Tsujii N, Furubayashi T, Kitazawa H, Kido G, Yokoya T

Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 565 - 565 2004.8

28aXC-11 Laser-excited ultrahigh-resolution photoemission study of Na_<0.35>CoO_2・1.3H_2O

Shimojima T, Yokoya T, Kiss T, Kanetaka F, Shin S, Togashi T, Chen C, Watanabe S, Takada K, Sasaki T, Sakurai H, Muromachi E

Meeting abstracts of the Physical Society of Japan 59 ( 1 ) 549 - 549 2004.3

28pXE-9 Doping-dependent pseudogap structure of Bi2212 : An ARPES study

Yokoya T., Baba T, Ando H., Tsuda S., Kiss T., Chainani A., Shin S, Mochiku T., Nakane T., HIratai K.

Meeting abstracts of the Physical Society of Japan 59 ( 1 ) 596 - 596 2004.3

28pXE-4 Photoemission study of YBa_2Cu_3O_<7-x> thin film

Okazaki K., Kiss T, Kanetaka F, Yokoya T, Shin S, Watanabe S, Togashi T, Muraoka Y, Hiroi Z.

Meeting abstracts of the Physical Society of Japan 59 ( 1 ) 594 - 594 2004.3

27pYD-4 ARPES study of quasi-one-dimensional conductor K_<0.3>MoO_3

Ando H., Yokoya T., Tsuda S., Eguchi R., Kisu T., Shin S., Eguchi T., Nohara M., Takagi H.

Meeting abstracts of the Physical Society of Japan 59 ( 1 ) 800 - 800 2004.3

28pXE-6 Laser-excited low-temperature ultrahigh-resolution photoemission study of Y(Ni_<1-x>Pt_x)_2B_2C(x=0.0,0.2)

Baba T, Kanetaka F., Yokoya T, Kiss T, Tsuda S, Shimojima T., Shin S., Watanabe T, Nohara M, Takagi H

Meeting abstracts of the Physical Society of Japan 59 ( 1 ) 595 - 595 2004.3

27aWL-1 Laser photoemission spectroscopy of κ-(BEDT-TTF)_2Cu [N(CN)_2]Br

Kiss T., Yokoya T., Kanetaka P., Shin F., Miyagawa K., Kanoda K.

Meeting abstracts of the Physical Society of Japan 59 ( 1 ) 823 - 823 2004.3

30pXC-5 Carbon substitution effect on the superconducting gap of MgB_2

Tsuda S, Yokoya T, Shin S, Uchiyama Y, Lee Sergey, Tajima S

Meeting abstracts of the Physical Society of Japan 59 ( 1 ) 648 - 648 2004.3

27pXC-7 High-resolution photoemission study of SrVO_3 and CaVO_3

Eguchi R, Kiss T, Kanetaka F, Ando H, Tsuda S, Yokoya T, Inoue I. H, Tokura Y, Shin S

Meeting Abstracts of the Physical Society of Japan 59 ( 0 ) 529 - 529 2004

13aRD-13 The study of the anisotropic superconducting gap of CeRu_2 using laser exited photoemission spectroscopy

Chen C, Chainani A

Meeting Abstracts of the Physical Society of Japan 59 ( 0 ) 457 - 457 2004

14pRC-17 Charge Density Wave and anisotropy of superconducting gap of 2H-NbSe_2

Chainani A

Meeting Abstracts of the Physical Society of Japan 59 ( 0 ) 535 - 535 2004

21aWB-3 Resonant Photoemission Spectroscopy of CeCoIn_5

Chainani A., Kamakura N., Taguchi M., Ito T., Takeuchi T., Rayjada P. A., Takata Y., Yokoya T., Shin S., Nohara M., Takagi H.

Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 634 - 634 2003.8

Carrier Concentration and Temperature Dependences of Holl coefficient in (Bi, Pb)_2(Sr, La)_2CuO_<6+δ> : Evaluation with Angle-Resolved Photoemission Spectroscopy

Kondo T., Takeuchi T., Yokoya T., Tsuda S., Shin S., Mizutani U.

Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 566 - 566 2003.8

High-resolution photoemission study of Skutterudite superconductor LaRu_4P_<12>

Tsuda S., Kanetaka F., Kiss T., Shimojima T., Yokoya T., Shin S., Sugawara H., Sato H., Harima H., Togashi T., Watanabe S., Chen C.

Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 568 - 568 2003.8

Photoelectron spectroscopy of Cd based quasicrystals and approximant phases

Tamura R., Minoda K., Aoki C., Takeuchi S., Takeuchi T., Kiss T., Yokoya T., Shin S.

Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 717 - 717 2003.8

Direct observation of the superconducting gap in CeRu_2 by laser-excited ultrahigh-resolution photoemission spectroscopy

Kanetaka F., Kiss T., Shimojima T., Yokoya T., Shin S., Togashi T., Kanai T., Chen C., Watanabe S., Onuki Y.

Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 553 - 553 2003.8

Carbon-dope effect on the electronic structure of MgB_2 : Angle Resolved Photoemission Spectroscopy

Tsuda S., Yokoya T., Shin S., Uchiyama Y., Lee Sergey, Tajima S., Harima H.

Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 557 - 557 2003.8

Low-temperature ultrahigh-resolution photoemission study of magnetic superconductor ErNi_2B_2C

Baba T., Yokoya T., Kanetaka F., Kiss T., Shimojima T., Tsuda S., Shin S., Togashi T., Kanai T., Chen C., Watanabe S., Nohara M., Takagi H.

Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 556 - 556 2003.8

Photocarrier injection V : High-resolution photoemission study of VO_2 thin films

Eguchi R., Tsuda S., Yokoya T., Kosuge A., Shin S., Muraoka Y., Hiroi Z.

Meeting abstracts of the Physical Society of Japan 58 ( 1 ) 489 - 489 2003.3

High-resolution angle-resolved photoemission study of MgB_2 superconducting gap

Tsuda S., Yokoya T., Shin S., Takano Y., Togano K., Kito H.

Meeting abstracts of the Physical Society of Japan 58 ( 1 ) 490 - 490 2003.3

ARPES of strong electron-phonon couling superconductor Pb : Comparison with high T_c

Yokoya T., Baba T., Tsuda S., Shin S.

Meeting abstracts of the Physical Society of Japan 58 ( 1 ) 541 - 541 2003.3

High-resolution photoemission spectroscopy of cubic Cd_6Y and Cd_6Ca

Aoki C., Tamura R., Takeuchi S., Kiss T., Yokoya T., Shin S.

Meeting abstracts of the Physical Society of Japan 58 ( 1 ) 778 - 778 2003.3

Construction of laser-excited ultrahigh-resolution photoemission spectrometer

Kanetaka F., Kiss T., Yokoya T., Shin S., Togashi T., Chen C., Watanabe S.

Meeting abstracts of the Physical Society of Japan 58 ( 1 ) 697 - 697 2003.3

Superconduction gap of Pb studied by ultrahigh-resolution ARPES II

Baba T., Yokoya T., Tsuda S., Shin S.

Meeting abstracts of the Physical Society of Japan 58 ( 1 ) 697 - 697 2003.3

Electrical property of a Cd-Yb single quasicrystal

MINODA Ken, TAMURA Ryuji, TAKEUCHI Shin, KISS Takayuki, YOKOYA Takayoshi, SHIN Shik

Meeting abstracts of the Physical Society of Japan 58 ( 1 ) 778 - 778 2003.3

Soft X-ray emission study of quasi-two-dimensional superconductor CI deintercalated ZrNCI

Takeuchi T, Shamoto S, Zhu L, Yamanaka S, Tsuda S, Kosuge A, Harada Y, Yokoya T, Kobayashi K, Tsukamoto T, Shin S, Hirai A

Meeting Abstracts of the Physical Society of Japan 58 ( 0 ) 829 - 829 2003

Ultrahigh-resolution ARPES on 2H-NbSe_2 : Temperature dependence of Fermi surface and mechanism of CDW

Chainani A.

Meeting Abstracts of the Physical Society of Japan 58 ( 0 ) 575 - 575 2003

Electronic structure of Na_xCoO_2・yH_2O

Yokoya T, Shimojima T, Chainani A, Takata Y, Tsuda S, Takeuchi T, Kamakura N, Kanetaka K, Kiss T, Fukushima A, Shin S, Tamasaku K, Nishino Y, Ishikawa T, Kobayashi K, Namatame H, Taniguchi M, Takada K, Sasaki T, Sakurai H, Muromachi E

Meeting Abstracts of the Physical Society of Japan 58 ( 0 ) 546 - 546 2003

Photoemission spectroscopy of MgB2

Tsuda S, Yokoya T, Jaliwala C, Chainani A, Shin S, Takano Y, Togano K, Ohtani S, Kito H

Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 525 - 525 2002.8

High-resolution photoemission and soft X-ray absorption study of Na0.33V2O5

Eguchi R., Tsuda S., Yokoya T., Kosuge A., Chainani A., Shin S., Yamauchi T., Ueda Y.

Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 420 - 420 2002.8

9pXC-14 High-resolution photoemission study of EuNi2(Si1-xGex)2

Shin S., Pratipalsinh R., Kanai K., Haruna T., Chainani A., Yokoya T., Wada H., Shiga M.

Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 546 - 546 2002.8

T-dependent dispersion change of Bi2212 along nodal direction

Yokoya T, Tsuda S, Kiss T, Chainani A, Shin S, Mochiku T, Hirata K

Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 474 - 474 2002.8

Carrier concentration dependence of critical temperature Tcin Bi2201 : Evaluation with angle-resolved photoemission spectroscopy

Kondo Takeshi, Takeuchi Tsunehiro, Yokoya Takayoshi, Kisu Takayuki, Shin Shik, Mizutani Uichiro

Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 475 - 475 2002.8

Superconducting gap of Pb studied by ultrahigh-resolution ARPES

Yokoya T., Baba T., Tsuda S., Shin S.

Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 596 - 596 2002.8

High-resolution photoemission spectroscopy of CaAlSi

Tsuda S, Yokoya T, Pratipalsinh R, Shin S, Imai M, Takano Y, Togano K, Kito H, Hase I

Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 524 - 524 2002.8

26pXM-4 Photoemission spectroscopy of κ-(BEDT-TTF)_2Cu[N(CN)_2]Br

Kisu T., Yokoya T., Tsuda S., Eguchi R., Haruna T., Kamakura N., Takata Y., Shin S., Miyagawa K., Kanoda K.

Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 793 - 793 2002.3

25pYJ-8 Photoemission study of Pyrochlore Superconductor Cd_2Re_2O_7 II

Eguchi R., Yokoya T., Baba T., Tsuda S., Kisu T., Haruna T., Hanawa M., Hiroi Z., Kamakura N., Takata Y., Shin S.

Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 563 - 563 2002.3

24aXN-10 Soft x-ray emission study of two-dimensional superconductor Na_xHfNCl

Takeuchi T., Tsuda S., Yokoya T., Nishiyama Y., Baba T., Tsukamoto T., Shin S., Hirai A., Shamoto S.

Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 763 - 763 2002.3

25aYD-10 Photoemission study of the low dimensional organic conductor

Haruna T., Kanai K., Yokoya T., Takata Y., Kamakura N., Shin S., Yamamoto H., Kato R.

Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 678 - 678 2002.3

25pYE-2 Ultrahigh-resolution photoemission Study of low-temperature superconductors

Kisu T., Yokoya T., Shin S.

Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 690 - 690 2002.3

24pYJ-11 High-resolution photoemission spectroscopy of MgB_2 related compounds

Tsuda S., Yokoya T., Shin S., Takano Y., Togano K., Ohtani S., Imai M., Kito H., Ihara H.

Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 503 - 503 2002.3

24pWA-7 Angle resolved photoemission study on CeCoIn5

Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 494 - 494 2002.3

25pWA-1 ARPES study of ZrTes : Fermi surface and temperature dependent gap

Yokoya T., Kisu T., Shin S., Yamaya K.

Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 548 - 548 2002.3

Tsuda Shunsuke, Yokoya Takayoshi, Kiss Takayuki, Shin Shik

Butsuri 57 ( 4 ) 258 - 262 2002

Language：Japanese Publisher：The Physical Society of Japan

In the last two decades, the resolution of photoemission spectroscopy has been dramatically improved nearly 100 times and is approaching 1 meV very recently. Consequently, photoemission spectroscopy can now directly measure fine electronic structures (having an energy scale of a few meV) very close to the Fermi energy, which are responsible for physical properties of solids. In this article, we would like to describe how ultrahigh-resolution photoemission spectroscopy performed at low temperatures is powerful in studying the fine electronic structures, using an example of our recent results on the superconducting gap of the MgB superconductor.

DOI： 10.11316/butsuri1946.57.258

実験室超高分解能光電子分光装置の試料低温化技術と単体金属の超伝導ギャップ観測

Qualitative analysis of the electronic structure of (Bi, Pb)_<2.12>Sr_<1.88>CuO_<6+δ>

Meeting abstracts of the Physical Society of Japan 56 ( 2 ) 423 - 423 2001.9

High-resolution photoemission study of A15 superconductor Nb_3Al

Yokoya T., Chainani A., Kiss T., Sin S., Hirata K.

Meeting abstracts of the Physical Society of Japan 56 ( 2 ) 425 - 425 2001.9

Multiple superconucting gap on MgB_2

Tsuda S., Yokoya T., Takeuchi T., Fukshima A., Baba T., Shin S., Takano Y., Togano K., Kito H., Ihara H.

Meeting abstracts of the Physical Society of Japan 56 ( 2 ) 449 - 449 2001.9

Photoemission study of Pyrochlore Superconductor Cd_2Re_2O_7

Eguchi R., Yokoya T., Baba T., Hanawa M., Hiroi Z., Shin S.

Meeting abstracts of the Physical Society of Japan 56 ( 2 ) 463 - 463 2001.9

Fermi surface sheet dependence of Superconducting gap of 2H-NbSe_2 studied by ultrahigh-resolution ARPES

Chainaini A.

Meeting abstracts of the Physical Society of Japan 56 ( 2 ) 425 - 425 2001.9

Ultrahigh-resolution photoemission spectroscopy of a quasicrystal and an approximant in the Cd-Yb system

Tamura R., Murao Y., Takeuchi S., Kiss T., Yokoya T., Shin S.

Meeting abstracts of the Physical Society of Japan 56 ( 2 ) 637 - 637 2001.9

Pseudogap induced by electron-phonon coupling: High-resolution photoemission

Yokoya T., Chainani A., Kiss T., Tsuda S., Shin S.

Meeting abstracts of the Physical Society of Japan 56 ( 2 ) 406 - 406 2001.9

Ultrahigh-resolution photoemission study of NiS_<2-x>Se_x

Ishii H., Kiss T., Yokoya T., Chainani A., Miyasaka S., Takagi H., Shin S.

Meeting abstracts of the Physical Society of Japan 56 ( 1 ) 572 - 572 2001.3

Fermi surface and band renormalization of 2H-NbSe_2

Kiss T., Yokoya T., Chainani A., Shin S., Nohara M., Takagi H.

Meeting abstracts of the Physical Society of Japan 56 ( 1 ) 486 - 486 2001.3

Ultrahight-resolution photoemission study of Ce(Pd,Ni)_3 compounds

Kanai K., Yokoya T., Schmerber G., Kappler J. P., Parlebas J. C., Shin S.

Meeting abstracts of the Physical Society of Japan 56 ( 1 ) 456 - 456 2001.3

Ultrahigh-resolution ARPES of Bi2212 : Detailed study of quasiparticle band dispersion

Yokoya T., Kiss T., Chainani A., Shin S., Kameda N., Tamegai T.

Meeting abstracts of the Physical Society of Japan 56 ( 1 ) 467 - 467 2001.3

28aYL-10 Electron-phonon coupling induced pseudogap and the superconducting transition in Ba_<1-x>K_xBiO_3

Chainani A., Yokoya T., Kiss T., Shin S, Nishio T., Uwe H.

Meeting abstracts of the Physical Society of Japan 56 ( 1 ) 485 - 485 2001.3

木須孝幸, 横谷尚睦, 辛埴

固体物理 36 ( 2 ) 83 - 90 2001.2

Gap on SmB_6 studied by Ultrahigh-resolution photoemission spectroscopy

Nozawa S, Tsukamoto T, Kanai K, Kiss T, Haruna T, Yokoya T, Shin S, Kunii S

Meeting Abstracts of the Physical Society of Japan 56 ( 0 ) 495 - 495 2001

Direct observation of the superconducting energy gap in CeRu_2 by means of ultrahigh-resolution photoemission spectroscopy

Kanai K, Nozawa S, Yokoya T, Sin S, Onuki Y

Meeting Abstracts of the Physical Society of Japan 56 ( 0 ) 495 - 495 2001

Ultrahigh-Resolution Photoemission Study of CeRu_2

Haruna T, Kanai K, Nozawa S, Yokoya S, Shin S, Onuki Y

Meeting Abstracts of the Physical Society of Japan 56 ( 0 ) 588 - 588 2001

High-resolution photoemission and inverse photoemission study of SrVO_3 and CaVO_3

Eguchi R, Yokoya T, Kiss T, Kanai K, Ishii H, Nozawa S, Tokura Y, Shin S

Meeting Abstracts of the Physical Society of Japan 56 ( 0 ) 573 - 573 2001

Topology of the Fermi surface and Band Structure near the Fermi level in the Pb-doped Bi_2Sr_2CuO_<6+δ> superconductor

Takeuchi T., Yokoya T., Matsuura M., Kondo T., Biwa T., Shin S., Ikuta H., Mizutani U.

Meeting abstracts of the Physical Society of Japan 55 ( 2 ) 529 - 529 2000.9

The observation of the pseudogap formation on CePd_3 by means of the ultrahigh-resolution photoemission

Kanai K., Yokoya T., Kiss T., Schmerber G., Kappler J. P., Parlebas J. C., Shin S.

Meeting abstracts of the Physical Society of Japan 55 ( 2 ) 441 - 441 2000.9

22pSE-8 Electronic structure of LaMn_2Ge_2 and SmMn_2Ge_2

Chainani A., Ito T., Kumigashira H., Takahashi T., Yokoya T., Higuchi T., Takeuchi T., Shin S., Mallik R., Sampathkumaran E. V.

Meeting abstracts of the Physical Society of Japan 55 ( 2 ) 443 - 443 2000.9

Angle-resolved photoemission study of V_6O_<13>

Eguchi R., Yokoya T., Kiss T., Ueda Y., Shin S.

Meeting abstracts of the Physical Society of Japan 55 ( 2 ) 521 - 521 2000.9

Electronic structure of ZrTe_3 studied by angle-resolved photoemission

Yokoya T., Kiss T., Shin S., Yamaya K.

Meeting abstracts of the Physical Society of Japan 55 ( 2 ) 685 - 685 2000.9

Ultrahigh-resolution angle-resolved photoemission spectroscopy of NdSe_2 (II)

Kiss T., Yokoya T., Shin S., Nohara M., Takagi H.

Meeting abstracts of the Physical Society of Japan 55 ( 2 ) 686 - 686 2000.9

Fine electronic structures of strong coupling superconductors observed by ultrahigh-resolution photoemission spectroscopy

Yokoya T., Kiss T., Chainani A., Shin S.

Meeting abstracts of the Physical Society of Japan 55 ( 1 ) 543 - 543 2000.3

Construction of ultrahigh-resolution potoelectron spectrometer and observation of superconducting gap of simple metal superconductors

Kiss T., Yokoya T., Shin S., Chainani A.

Meeting abstracts of the Physical Society of Japan 55 ( 1 ) 624 - 624 2000.3

Ultrahigh-resolution angle-resolved photoemission spectroscopy of NbSe_2

Kiss T., Yokoya T., Shin S., Nohara M., Takagi H.

Meeting abstracts of the Physical Society of Japan 55 ( 1 ) 691 - 691 2000.3

Ultrahigh-resolution photoemission spectroscopy of Y(Ni_<1-x>Pt_x)_2B_2C : x dependece of superconducting gap

Yokoya T., Kiss T., Watanabe T., Shin S., Nohara M., Takagi H.

Meeting abstracts of the Physical Society of Japan 55 ( 1 ) 433 - 433 2000.3

Ultrhigh-resolution photoemission and Resonant Inverse Photoemission Study of CePd_3

Kanai K., Yokoya T., Terashima T., Kiss T., Schmerber G., Kappler J. P., Shin S.

Meeting abstracts of the Physical Society of Japan 55 ( 1 ) 464 - 464 2000.3

Metal-insulator transition of V_6O_<13> by Soft X-ray Raman scattering and Photoemission spectroscopy

Eguchi R, Shin S, Harada Y, Ishiwata Y, Terashima T, Kiss T, Takeuchi T, Watanabe M, Yokoya T, Ueda Y

Meeting Abstracts of the Physical Society of Japan 55 ( 0 ) 429 - 429 2000

Sample Cooling in Photoemission Spectroscopy

YOKOYA Takayoshi, KISU Takayuki, SHIN Shik

20 ( 12 ) 890 - 891 1999.12

27aF-4 Electronic states of Na_xZrNCl : Photoemission and soft x-ray absorption spectroscopy

Yokota T, Higuchi T, Kisu T, Fukushima A, Fujisawa M, Shin S, Takahashi T, Fujisawa K, Morimoto S, Kajitani T

Meeting abstracts of the Physical Society of Japan 54 ( 2 ) 771 - 771 1999.9

28p-B-5 Soft x-ray absorption study of two-dimensional superconductor Na_xHfNCl

Yokoya T, Ishiwata Y, Kanai K, Terashima A, Fukushima A, Fujisawa M, Shin S, Takahashi T, Iizawa K, Shamoto S, Kajitani T

Meeting abstracts of the Physical Society of Japan 54 ( 1 ) 541 - 541 1999.3

29p-B-8 High-resolution angle-resolved photoemission study of 2H-NbSe_2

Fujisawa H., Yokoya T., Nakai T., Kumigashira H., Takahashi T., Takita H., Onuki Y.

Meeting abstracts of the Physical Society of Japan 54 ( 1 ) 595 - 595 1999.3

29p-K-2 Donor-state of La-and Nb-doped SrTiO_3

Tsukamoto T., Higuchi T., Yamaguchi S., Ishiwata Y., Yokoya T., Fujisawa M., Shin S.

Meeting abstracts of the Physical Society of Japan 54 ( 1 ) 599 - 599 1999.3

29a-L-4 Ultrahigh-resolution photoemission study of LSCO : temperature dependence

Sato T., Naitoh Y., Yokoya T., Takahashi T., Yamada K.

Meeting abstracts of the Physical Society of Japan 54 ( 1 ) 585 - 585 1999.3

31a-E-8 Ultrahigh-resolution photoemission study of NiS

Naitoh Y., Sato T., Yokoya T., Takahashi T., Onodera M., Yamada K.

Meeting abstracts of the Physical Society of Japan 54 ( 1 ) 483 - 483 1999.3

29a-E-9 High energy spectroscopy of NaV_2O_5

Terashima T., Kanai K., Yokoya T., Shin S., Isobe M., Ueda Y.

Meeting abstracts of the Physical Society of Japan 54 ( 1 ) 415 - 415 1999.3

31p-D-9 Spectral Evidence for Pseudogap Formation in Kondo Insulator CeRhXp(Xp=Sb, As)Studied by Ultrahigh-Resolution Photoemission(II)

Kumigashira H., Sato T., Yokoya T., Takahashi T., Yoshii S., Kasaya M.

Meeting abstracts of the Physical Society of Japan 54 ( 1 ) 495 - 495 1999.3

Bi2212におけるStripeと角度分解光電子分光

佐藤宇史, 横谷尚睦, 竹内恒博, CAMPUZANO J C, DING H, FRETWELL H, MESOT J, 茂筑高士, 門脇和男

日本物理学会講演概要集 54 ( 2 ) 1999

Bi2212の超伝導ギャップと磁場侵入長角度分解光電子分光

佐藤宇史, 横谷尚睦, 高橋隆, 竹内恒博, FRETWELL H, KAMINSKI A, CAMPUZANO J C, 茂筑高士, 門脇和男

日本物理学会講演概要集 54 ( 2 ) 1999

Bi2212の角度分解光電子スペクトルと(π,π)モード

佐藤宇史, 横谷尚睦, 高橋隆, 竹内恒博, CAMPUZANO J C, 茂筑高士, 門脇和男, GPTASARMA P G, HINKS D G

日本物理学会講演概要集 54 ( 2 ) 1999

Temperature dependence of coherent peak in superconducting Bi2212: ultrahigh-resolution photoemission spectroscopy

YOKOYA T., SATO T., NAITOH Y., TAKAHASHI T., MOCHIKU T., HIRATA K., KIMURA K., KATAOKA N., KADOWAKI K.

Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 704 - 704 1998.9

High-resolution angle-resolved photoemission study of Bi2201

SATO T., YOKOYA T., TAKAHASHI T., DING H., FRETWELL H., KAMINSKI A., MOSOT J., CAMPUZANO J.C., CHONG I., TERASHIMA T., TAKANO M.

Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 704 - 704 1998.9

28a-YD-1 Angle-Resolved Photoemission Study of BaCo_<1-x>Ni_xS_2

DINU I., FUJISAWA H., YOKOYA T., TAKAHASHI T., SHAMOTO S.

Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 719 - 719 1998.9

Spectral Evidence of Pseudogap Formation in Kondo Insulators CeRhXp(Xp=Sb,As)Studied by Ultrahigh-Resolution Photoemission(I)

KUMIGASHIRA H., SATO T., YOKOYA T., TAKAHASHI T., YOSHII S., KASAYA M.

Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 554 - 554 1998.9

Direct observation of superconducting gap of La_<1.85>Sr_<0.15>CuO_4 by ultrahigh-resolution photoemission spectroscopy

NAITOH Y., SATO Y., YOKOYA T., TAKAHASHI T., YAMADA K.

Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 640 - 640 1998.9

Line shape analysis of high-resolution angle-resolved photoemission spectra in Bi2212

SATO T., YOKOYA T., TAKAHASHI T., DING H., MOSOT J., KAMINSKI A., FRETWELL H., CAMPUZANO J.C., KIMURA K., KATAOKA N., KADOWAKI K., MOCHIKU T., HIRATA K.

Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 641 - 641 1998.9

Ultrahigh-resolution photoemission spectrometer to study the fine electronic structure near the Fermi level

SATO T., NAITOH Y., YOKOYA T., TAKAHASHI T.

Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 215 - 215 1998.9

The superconductiong gap of the Pb-substituted overdoped Bi2212:Angle-resolved photoemissoin spectroscopy

SATO T., YOKOYA T., TAKAHASHI T., CAMPUZANO J.C, CHONG I., TERASHIMA T., HIROI Z., TAKANO M.

Meeting abstracts of the Physical Society of Japan 53 ( 1 ) 614 - 614 1998.3

X-ray absorption and photoemission spectroscopy of Ce_<1-x>Sr_xTiO_3

YOKOYA T., SATO T., CHAINANI A., TAKAHASHI T., ONODA M.

Meeting abstracts of the Physical Society of Japan 53 ( 1 ) 618 - 618 1998.3

Angle-resolved photoemission study of one dimensional cuprate Sr_2CuO_3 II(Ne I excitation)

FUJISAWA H., YOKOYA T., TAKAHASHI T., MIYASAKA S., KIFUNE M., TAKAGI H.

Meeting abstracts of the Physical Society of Japan 53 ( 1 ) 613 - 613 1998.3

The XAS and UPS of the SrFeO_<3-δ> accross M-I transition

SATO T., YOKOYA T., CHAINANI A., TAKAHASHI T., KAWASAKI S., TAKANO M., TAKEDA Y.

Meeting abstracts of the Physical Society of Japan 53 ( 1 ) 196 - 196 1998.3

(La_1-z,Nd_z)_0.46Sr_0.54MnO₃の電子構造

竹内恒博, 曽田一雄, 水谷宇一郎, 守友浩, CAMPUZANO J C, FRETWELL H, 横谷尚睦, 高橋隆, 樋口透

日本物理学会講演概要集 53 ( 2 ) 1998

Electronic structure of(La_<1-z>,Nd_z)_<0.46>Sr_<0.54>MnO_3

TAKEUCHI T, DING H, KAMINSKY A, MESOT J, FRETWELL H, YOKOYA T, SATO T, KUMIGASHIRA H, TAKAHASHI T, SHIN S, HIGUCHI T, SODA K, TAKEICHI N, KATO M, YANAGIDA Y, NOMURA T, MIZUTANI U, MORITOMO Y, CAMPUZANO J.C

Meeting Abstracts of the Physical Society of Japan 53 ( 0 ) 224 - 224 1998

7p-T-3 ARPES Supectral Shape of the Bi2201 Superconductors

Takeuchi T, Yokoya T, Ding H, Campuzano J.C., Takahashi T, Chong I, Terashima T, Takano M

Meeting abstracts of the Physical Society of Japan 52 ( 2 ) 673 - 673 1997.9

6a-W-8 Angle-resolved photoemission study of Sr_<14-x>Ca_xCu<24>O_<41> : x-dependence

Sato T., Yokoya T., Takahashi T., Goshima J., Fujino Y., Nagata T., Uehara M., Akimitsu J.

Meeting abstracts of the Physical Society of Japan 52 ( 2 ) 628 - 628 1997.9

7a-W-6 Angle-resolved photoemission study of one dimensional cuprate Sr_2CuO_3

Fujisawa H, Yokoya T, Takahashi T, Miyasaka S, Kifune M, Takagi H

Meeting abstracts of the Physical Society of Japan 52 ( 2 ) 662 - 662 1997.9

5p-YF-6 Normal-state gap studied by angle-resolved photoemission spectroscopy

Yokoya T., Takahashi T.

Meeting abstracts of the Physical Society of Japan 52 ( 2 ) 610 - 610 1997.9

7p-T-4 Normal-state gap of Pb-substituted Bi2201 studied by high-resolution angle-resolved photoemission spectroscopy

Yokoya T, Ding H, Takeuchi T, Campuzano J.C., Takahashi T, Chong I, Terashima T, Takano M

Meeting abstracts of the Physical Society of Japan 52 ( 2 ) 673 - 673 1997.9

28p-PSA-40 Resonant Photoemission Study of CeTiO_<3+y> and Ce_<1-x>Sr_xTiO_3

Akaki O., Fujisawa H., Ashihara A., Yokoya T., Chainani A., Takahashi T., Onoda M.

Meeting abstracts of the Physical Society of Japan 52 ( 1 ) 454 - 454 1997.3

30p-G-3 Metallic-Covalent Bonding Conversion in Icosahedral Cluster Solids

Kimura K, Matsuda H, Fujimori M, Terauchi M, Tanaka M, Kumigashira H, Yokoya N, Takahashi T

Meeting abstracts of the Physical Society of Japan 52 ( 1 ) 168 - 168 1997.3

Angle-resolved photoemission spectroscopy of non-cuprate two-dimensional perovskite superconductor Sr2RuO4

T. Yokoya, A. Chainani, T. Takahashi, H. Ding, J. C. Campuzano, M. Kasai, Y. Tokura

Physica B: Condensed Matter 237-238 377 - 379 1997

Language：English Publisher：Elsevier

We have performed high-resolution angle-resolved photoemission spectroscopy on single crystal Sr2RuO4. at low temperature. We observed that the dispersion of energy bands near the Fermi level (EF) is about two times smaller than the band calculation. One band forms an extended van-Hove singularity (vHs) near EF around the midpoint between F and Z point like in cuprate superconductors, regardless of the character of electronic states near EF. The observed Fermi surface topology (one electron-like Fermi surface sheet centered at Γ point and two hole-like ones centered at X point) is qualitatively different from the calculated Fermi surface topology (two electron-like fermi sheets centered at Γ point and one hole-like one centered at X point), though the observed total electron count seems to be conserved. These results suggest that the extended vHs may be a general electronic structure of correlated two-dimensional metals and the correlation effect may change the Fermi surface topology as well as the band dispersion.

DOI： 10.1016/S0921-4526(97)00237-8

High-resolution angle-resolved photoemission study of Sr14-xCaxCu24O41 (x=0 and 6)

T. Yokoya, H. D. Kim, A. Ashihara, H. Kumigashira, H. Fujisawa, T. Takahashi, M. Uehara, T. Nagata, J. Akimitsu

Physica C: Superconductivity and its Applications 282-287 ( 2 ) 997 - 998 1997

Language：English Publisher：Elsevier

We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) of ladder compounds Sr14-xCaxCu24O41 (x = 0 and 6) to study the change of the electronic structure near the Fermi level (Ep) by substitution of Sr with Ca. The experimental band structures of both compounds determined by ARPES show a dispersive band near EF, which has a minimum binding energy at ka = (2n+1)π/2 (n=0, ±1, ±2...) with the periodicity of a ladder sublattice. This result indicates that the electronic states near EF originate in the ladder and form aMott-Hubbard band with an energy gap at ka= (2n+1)π/2. This suggests that Cu atoms in the ladder take essentially a divalent state (Cu2+) and "self-doped" holes reside on the chain. It was also found that the dispersive band of Sr8Ca6Cu24O41 is closer to EF than that of Sr14Cu24O41, indicating that the ladder band is "doped" with holes by Ca-substitution. This suggests that the superconductivity observed in a heavily Ca-substituted sample occurs on the ladder.

DOI： 10.1016/S0921-4534(97)00632-1

Sr_xCa_<14-x>Cu_<24>O_<41>角度分解光電子分光 : ドーピング依存性(第42回物性若手夏の学校(1997年度))

Doping dependence of Fermi surface in BI2212: angle-resolved photoemission spectroscopy.

横谷尚睦, DING H, 竹内恒博, CAMPUZANO J C, RANDERIA M, NORMAN M R, 茂筑高士, 門脇和男, 高橋隆

日本物理学会講演概要集(年会) 52 ( 1 Pt 3 ) 1997

佐藤宇史, 横谷尚睦, 高橋隆, 五嶋潤治, 藤野裕一, 永田貴志, 上原政智, 秋光純

物性研究 69 ( 3 ) 574 - 574 1997

Angle-resolved photoemission study of one dimensional cuprate Sr_2CuO_3

Fujisawa H., Yokoya T., Takahashi T., Miyasaka S., Kifune M., Takagi H.

69 ( 3 ) 574 - 574 1997

High-Resolution Angle Resolved Photoemission Study of CeSb

Kumigashira H., Kim H.D., Ashihara A., Chainani A., Yokoya T., Takahashi T., Uesawa A., Suzuki T.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 2 ) 283 - 283 1996.9

Paramagnetic-to-Antiferroparamagnetic Phase Transition of CeSb Studied by High-Resolution Angle Resolved Photoemission

Kumigashira H., Kim H.-D., Ashihara A., Chainani A., Yokoya T., Takahashi T., Uesawa A., Suzuki T.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 3 ) 13 - 13 1996.9

Fermi surface of Sr_2RuO_4 : high-resolution photoemission spectroscopy

Yokoya T., H Ding, A Chainani, Takahashi T., J.C Campuzano, Kasai M., Tokura Y.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 3 ) 425 - 425 1996.9

High-resolution photoemission study of normal-state gap in underdoped Bi2212

Yokoya T., H Ding, Takahashi T., J.C Campuzano, M Randeria, M.R Norman, Mochiku T., Kadowaki K., J Giapintzakis

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 3 ) 550 - 550 1996.9

High-resolution Angle-Resolved Photoemission Study of LaSb

Ashihara A., Kumigashira H., Kim H.D., Chainani A., Yokoya T., Takahashi T., Uesawa A., Suzuki T.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 2 ) 282 - 282 1996.9

Angle-resolved phtoemission study of SrCuO_2;Spin-Charge Separation?

Takahashi T., Yokoya T., Fujisawa H., Tanaka M., Takei F.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 3 ) 487 - 487 1996.9

Photoemission Study of Ladder Compound Sr_<14-x>Ca_xCu_<24>O_<41>

Takahashi T., Yokoya T., Akaki O., Fujisawa H., Ashihara A., A Chainani, Uehara M., Nagata T., Akimitsu J.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 3 ) 483 - 483 1996.9

Normal-state gap in Bi_2Sr_2CaCu_2O_8 observed by high-resolution photoemission spectroscopy

Yokoya T., Ding H., Takahashi T., Campuzano J.C., Randeria M., Norman M.R., Mochiku T., Kadowaki K., Giapintzakis J.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 2 ) 259 - 259 1996.9

3P-YF-9 High-Resolution Angle Resolved Photoemission Study of CeP

Kumigashira H., Yang S.-H., Yokoya T., Chainani A., Takahashi T., Uesawa A., Suzuki T.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 3 ) 250 - 250 1996.3

3p-YJ-10 Momentum(k)-Dependence of Superconducting Gap in BI2212 Studied by High-Resolution Photoemission Spectroscopy

Yokoya T., Takahashi T., Mochiku T., Kadowaki K.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 3 ) 535 - 535 1996.3

3p-YJ-11 Doping-Dependence of Fermi Surface Topology in Bi2212 Studied by Angle-Resolved Photoemission Spectroscopy

Campuzano J.C., Mochiku T., Kadowaki K.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 3 ) 536 - 536 1996.3

31p-Z-7 High resolution photoemission study of metal-insulator transition of (MeBr-DCNQI)_2Cu

Akaki O, Chainani A, Kumigashira H, Yokoya T, Takahashi T, Kato R

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 2 ) 247 - 247 1996.3

31p-Z-12 High-Resolution Photoemission Spectroscopy of CeCu_6, CeB_6, and CeSi_x

Chiaia G, Takahashi T, Lindau I, Duo L, Rossi S.de, Yokoya T, Kunii S, Komatsubara T, Kohgi M

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 2 ) 250 - 250 1996.3

1p-C-12 Photoemission Spectroscopy of Yb_xC_<60>

Sumitani S., Akaki O., Yokoya T., Takahashi T.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 2 ) 371 - 371 1996.3

31p-Z-5 Superconducting Gap in YBa_2Cu_3O_<7-δ> Observed by High-Resolution Photoemission Spectroscopy

Ding H, Campuzano J.C, Yokoya T, Claus H, Takahashi T

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 2 ) 246 - 246 1996.3

31p-Z-14 High-energy Resolution Photoemission Study of CeFeGe_3

Kumigashira H, Yang S.H, Chainani A, Akaki O, Yokoya T, Takahashi T, Sakai O, Yamamoto H, Ishikawa M

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 2 ) 251 - 251 1996.3

Angle-resolved photoemission study o

T. Yokoya, A. Chainani, T. Takahashi, H. Ding, J. Campuzano, H. Katayama-Yoshida, M. Kasai, Y. Tokura

Physical Review B - Condensed Matter and Materials Physics 54 ( 18 ) 13311 - 13318 1996

Language：English

We present high-resolution (HR) angle-resolved photoemission spectroscopy (ARPES) measurements of the noncuprate layered perovskite superconductor (Formula presented)(Formula presented). ARPES spectra of the whole valence-band region obtained along two high-symmetry directions in the Brillouin zone show clear dispersion, generally similar to that of a band calculation. However, HRARPES measurements taken in the vicinity of the Fermi level ((Formula presented)) show narrower Ru4dɛ(xy, yz, zx)-O2pπ antibonding bands than those predicted by the band calculation. More significantly, there is an extended van Hove singularity very close to (Formula presented) ((Formula presented)=11 meV) along the Ru-O bonding direction, which is known to exist in cuprate high-temperature superconductors. The Fermi-surface topology obtained by HRARPES (one electronlike Fermi surface sheet centered at the Γ point and two holelike sheets centered at the X point) is different from the band calculation (two electronlike sheets centered at the Γ point and one holelike sheet centered at the X point), although the electron count is the same in both cases. These results suggest that electron-electron correlations cause the modification of the Fermi-surface topology, and is thus necessary for understanding the electronic structure and properties of (Formula presented)(Formula presented). © 1996 The American Physical Society.

DOI： 10.1103/PhysRevB.54.13311

27a-W-13 High-resolution photoemission spectroscopy of the Metal-insulator/CDW transition in deuterated DCNQI-Cu

Chainani A., Yokoya T., Takahashi T., Kato R.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 2 ) 229 - 229 1995.9

28a-W-9 High Resolution Photoemission Study of CeNiSi_2 and CePtSi_2

Kumigashira H., Chainani A., Yokoya T., Akaki O., Takahashi T., Ito M., Kasaya M., Sakai O

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 2 ) 259 - 259 1995.9

28a-W-8 High-Resolution Angle Resolved Photoemission Study of CeBi

Kumigashira H., Yang S.-H., Yokoya T., Takahashi T., Uesawa A., Suzuki T.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 2 ) 259 - 259 1995.9

27a-W-9 High-resolution angle-resolved photoemission study of Sr_2RuO_4

Yokoya T., Chainani A., Takahashi T., Katayama-Yoshida H., Kasai M., Tokura Y.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 2 ) 227 - 227 1995.9

28a-K-10 Photoemission study of duterated(DMe-DCNQI[1, 1;0]_2Cu using synchrotron radiation

Yokoya T, A Chainani, Takahashi T, Mori T, Kato R

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 2 ) 366 - 366 1995.9

28a-K-11 Photoemission spectroscopy of(DCNQI)_2Ag

A Chainani, Yokoya T, Takahashi T, Mori T

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 2 ) 366 - 366 1995.9

28a-K-12 High-Resolution Photoemission Study of(DMe-DCNQI[1, 1;0]_2Cu

Takahashi T, Yokoya T, A Chainani, Tanaka A, Kumigashira H, Akaki O, Kato R

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 2 ) 367 - 367 1995.9

Photoemission study of Bi_2CuO_4

Akaki O., Chainani A., Yokoya T., Takahashi T., Hosoya S.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 3 ) 435 - 435 1995.9

High-resolution photoemission spectroscopy of CeRu_2

Yang S.-H., Kumigashira H., Yokoya T., Chainani A., Takahashi T., Takeya H., Kadowaki K.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 3 ) 217 - 217 1995.9

X-rey absorption spectroscopy of metal-insulator transition of CeTiOx

Akaki O., Yokoya T., Chainani A., Takahashi T., Onoda M.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 3 ) 178 - 178 1995.9

High-resolution photoemission spectroscopy of UNi_2Al_3 and URu_2Si_2

Yang S.-H., Kumigashira H., Yokoya T., Chainani A., Takahashi T., Sato N., Komatsubara T.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 3 ) 79 - 79 1995.9

High-resolution photoemission spectroscopy of CeSn_3 and CeIn_3

Chainani A., Kumigashira H., Yokoya T., Takahashi T., Kasaya M.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 3 ) 75 - 75 1995.9

Polarized soft x-ray absorption study of Sr_2RuO_4

Yokoya T., Chainani A., Akaki O., Takahashi T., Katayama-Yoshida H., Kasai M., Tokura Y.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 3 ) 496 - 496 1995.9

XPS Studies of DCNQI-Cu Systems

Tanaka A, Chainani A, Yokoya T, Takahashi T, Mori T

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 2 ) 384 - 384 1995.3

Resonant Photoemission study of Sr_2RuO_4

Yokoya T, Chainani A, Miyazaki T, Takahashi T, Katayama-Yoshida H, Kasai M, Tokura Y

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 3 ) 493 - 493 1995.3

31a-YF-1 High-resolution photoemission spectroscopy of the Verwey transition in Fe_3O_4

Chainani A., Morimoto T., Yokoya T., Takahashi T., Todo S.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 3 ) 179 - 179 1995.3

30p-PSA-46 Electronic structure of the Kondo insulator Ce_3Bi_4Pt_3 from high resolution

Chainani A., Morimoto T., Yokoya T., Takahashi T., Yoshii S., Kasaya M.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 3 ) 132 - 132 1995.3

High-Resolution Photoemission Study of UPd_2Al_3

Takahashi T., Yokoya T., Chainani A., Morimoto T., Sato N., Komatsubara T.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 3 ) 6 - 6 1995.3

Low-temperature high-resolution photoemission study of CeNiSi_2 and CePtSi_2

Yokoya T., Chainani A., Kumigashira H., Akagi O., Takahashi T., Ito S., Kasaya M.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 3 ) 158 - 158 1995.3

High-resolution angle-resolved photoemission study of Sr_2RuO_4

Yokoya T, Akagi O, Kumigashira H, Chainani A, Takahashi T, Katayama-Yoshida H, Kasai M, Tokura Y

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 3 ) 494 - 494 1995.3

Momentum dependence of the superconducting Gap in Bi2Sr2CaCu2O8

H. Ding, J. C. Campuzano, A. F. Bellman, T. Yokoya, M. R. Norman, M. Randeria, T. Takahashi, H. Katayama-Yoshida, T. Mochiku, K. Kadowaki, G. Jennings

Physical Review Letters 74 ( 14 ) 2784 - 2787 1995

Language：English

We measure the momentm dependence of the superconducting gap along the Fermi surface of Bi2Sr2CaCu2O8 by high resolution angle-resolved photoemission spectroscopy. The gap is large in the vicinity of the M̄ point (where γ- M̄ is along the Cu-O bond), and small along the γ- X and γ- Y (π,π) directions. However, the gap is not zero along these directions, but, within our accuracy, becomes zero about 10 on either side of the (π,π) directions. We discuss the implications of these results for the symmetry of the order parameter. © 1995 The American Physical Society.

DOI： 10.1103/PhysRevLett.74.2784

5p-YE-2 Fermi Surface of Tl2201 studied by ultra-high energy resolution ARUPS

Yokoya T, Takahashi T, Katayama-Yoshida H, Ding H, Bellmann A, Campuzano J.C, Gu C, Liu R, Manako T, Kubo Y

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 3 ) 409 - 409 1994.8

5a-YE-13 Superstructure in BiO layer and its effect to the electronic structure in Bi2212

Yokoya T, Takahashi T, Mochiku T, Kadowaki K

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 3 ) 402 - 402 1994.8

5p-YE-1 Anisotropy of superconducting gap in Bi2212 studied by ultra-high energy resolution ARUPS

Yokoya T, Takahashi T, Katayama-Yoshida H, Ding H, Bellmann A, Campuzano J.C, Gu C, Liu R, Mochiku T, Kadowaki K

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 3 ) 409 - 409 1994.8

4a-F-10 High-Resolution Photoemission Spectoroscopy of CeCu_6 and CeB_6 : Obsevation of Crystal-Field Splitting

Morimoto T, Yokoya T, Chainani A, Takahashi T, Kunii S, Yoshida T, Sato N, Komatsubara T

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 2 ) 235 - 235 1994.8

4a-F-2 Ultra-high energy resolution ARUPS study of Bi_2Sr_2CaCu_2O_8

Yokoya T, Takahashi T, Katayama-Yoshida H, Ding H, Bellmann A, Campuzano J.C, Gu C, Liu R, Mochiku T, Kadowaki K

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 2 ) 231 - 231 1994.8

3p-F-9 High-resolution low-temperature photoemission study of FeSi : observation of the hybridization gap

Chainani A, Yokoya T, Morimoto T, Takahashi T, Yoshii S, Kasaya M

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 2 ) 214 - 214 1994.8

4a-F-9 Fine structures in a photoemisson spectrum of gold and their abnormal temperature broadening

Chainani Ashish, Yokoya Takayoshi, Morimoto Takayuki, Takahashi Takashi

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 2 ) 234 - 234 1994.8

2p-S-1 Ultraviolet Photoelectron spectroscopy of Sc_2@C_84, ScxC_84

Ito A, Yokoya T, Ashishi C, Takahashi T, Hayashi N, Tansyo M, Shinohara H

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 2 ) 263 - 263 1994.8

4a-F-3 Ultra-high energy resolution ARUPS study of Tl_2Ba_2CuO_6

Yokoya T, Takahashi T, Katayama-Yoshida H, Ding H, Bellmann A, Campuzano J.C, Gu C, Liu R, Manako T, Kubo Y

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 2 ) 231 - 231 1994.8

4a-F-1 Anomalous band-folding effect in Bi_2Sr_2CaCu_2O_8

Yokoya T, Takahashi T, Mochiku T, Kadowaki K

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1994 ( 2 ) 230 - 230 1994.8

31a-YK-13 Electronic state of solid C_<60>;From a molecular orbital to a band

Ito Ai, Morimoto Takayuki, Yokoya Takayoshi, Takahashi Takashi

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 49 ( 2 ) 345 - 345 1994.3

28p-H-7 High-energy resolution angle-resolved photoemission study of high-Tc Superconductor

Yokoya Takayoshi, Takahashi Takashi

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 49 ( 2 ) 189 - 189 1994.3

28p-H-2 High-Resolution Photoemission Spectoroscopy of CeSi_x; Temperature Dependence

Morimoto T, Yokoya T, Takahashi T, Sato S, Kohgi M, Satoh T

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 49 ( 2 ) 186 - 186 1994.3

30p-WB-6 Observation of Superconducting Gap Anisotropy in Bi2212 by Angle-Resolved Phtoemission Spectroscopy

Yokoya T, Takahashi T

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 49 ( 3 ) 411 - 411 1994.3

High-energy-resolution photoemission study of single-crystal CeSix (x=1.86 and 1.7): A test of the Kondo model

T. Takahashi, T. Morimoto, T. Yokoya, M. Kohgi, T. Satoh

Physical Review B 49 ( 22 ) 15688 - 15691 1994

Language：English

Photoemission spectra of single crystal CeSix (x=1.86
nonmagnetic, TK∼20 K, and x=1.7
ferromagnetic, Tc=13.7 K) were measured at very high-energy resolution and low temperature. The Fermi-edge band in the photoemission spectrum of CeSi1.86 is narrower and closer to EF compared with the previous reports on polycrystals, showing closer resemblance to the calculation based on the Kondo model. The intensity of the Fermi-level peak is drastically reduced in going from CeSi1.86 to CeSi1.7, which is in good qualitative agreement with the Kondo model. © 1994 The American Physical Society.

DOI： 10.1103/PhysRevB.49.15688

13p-B-7 High-Energy Resolution Low-Temperature Photoemission Spetroscopy of Cs_xC_<60>

Morimoto Takayuki, Yokoya Takayoshi, Takahashi Takashi

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1993 ( 2 ) 376 - 376 1993.9

12a-DC-15 Low Temperature and High-Resolution Photoemission Spectroscopy of Ce Compounds

Morimoto T., Yokoya T., Takahashi T., Sato S., Kohgi M., Sato T., Suzuki T.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1993 ( 2 ) 217 - 217 1993.9

12a-DC-12 High energy resolution photoemission spectroscopy of Au : Temperature effects

Yokoya T., Morimoto T., Takahashi T., Sato S.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1993 ( 2 ) 215 - 215 1993.9

30a-W-13 Direct Observation of the Superconducting Energy Gap by High-Resolution Photoemission Spectroscopy (II)

Yokoya T., Takahashi T., Morikawa T., Yoshida H., Sato S., Fujiwara A., Noji T., Koike Y., Saito Y.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 48 ( 3 ) 288 - 288 1993.3

29a-P-13 Low Temperature and High-Resolution Photoemission Spectroscopy of Ce Compounds

Morimoto T., Yokoya T., Takahashi T., Sato S., Kunii S., Suzuki T.

Abstracts of the meeting of the Physical Society of Japan. Annual meeting 48 ( 2 ) 208 - 208 1993.3

Superconducting energy gap in Bi2Sr2CaCu2O8 observed by high-resolution photoemission spectroscopy

Takayoshi Yokoya, Takashi Takahashi, Akihiko Fujiwara, Yoji Koike

Solid State Communications 87 ( 6 ) 553 - 556 1993

Language：English

A high-energy resolved low-temperature photoemission spectrometer of angle-integrated mode was constructed to study the detailed electronic structure near the Fermi level of novel materials, in particular, cuprate high-Tc superconductors. Photoemission measurement with this spectrometer on a Bi2Sr2CaCu2O8 polycrystal clearly showed a transfer of spectral weight from the vicinity of the Fermi level to the higher binding-energy region below the superconducting transition temperature, indicating opening of the superconducting gap. Numerical simulation for both normal and superconducting states showed that the superconducting gap parameter (Δ) of 18 meV with dx2-y2 symmetry gives a most reasonable fitting. © 1993.

DOI： 10.1016/0038-1098(93)90595-E