Faculty Profiles - Kasahara Shigeru

MISC - Kasahara Shigeru

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25pRL-5 Laser angle-resolved photoemission study on BaFe_2(As_<0.67>P_<0.33)_2 : Observation of Fermi surface and Superconducting gap

Sakaguchi F, Shimojima T, Ishizaka K, Ishida Y, Okawa M, Kiss T, Togashi T, Wang X. -Y, Chen C. T, Watanabe S, Kasahara S, Shibauchi T, Matsuda Y, Takeya H, Hirata K, Terashima T, Shin S

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 457 - 457 2009.8

25aRH-3 Superconducting gap structure studied by thermal conductivity measurements of BaFe_2(As<1-x>P_x)_2

Senshu Y, Yamashita M, Nakata N, Kasahara S, Terashima T, Takeya H, Hirata K, Shibauchi T, Matsuda Y

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 405 - 405 2009.8

25aRH-2 Determination of superconducting gap symmetry in single crystals of iron-arsenide superconductor BaFe_2(As_<1-x>P_x)_2 from the penetration depth measurements

Hashimoto K, Tonegawa S, Ikada K, Serafin Alenssandro, Carrington Antony, Kasahara S, Terashima T, Takeya H, Hirata K, Ikeda H, Shibauchi T, Matsuda Y

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 405 - 405 2009.8

28pRH-4 Superconductivity in BaFe_2(As_<1-x>P_x)_2 single crystal : Electronic transport properties

Kasahara S, Hashimoto K, Yamashita M, Shishido H, Okazaki R, Tonegawa S, Senchu Y, Ikada K, Takeya h, Hirata K, Ikeda H, Shibauchi T, Terashima T, Matsuda Y

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 568 - 568 2009.8

27pRH-11 ^<31>P and ^<75>As-NMR studies on iron-based superconductors BaFe_2(As_<1-x>P_x)_2

Iye T, Kitagawa S, Nakai Y, Ishida K, Kasahara S, Shibauchi T, Matsuda Y, Terashima T

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 546 - 546 2009.8

27aRH-9 PLD Growth of Fe-based superconducting films and investigations on the superconducting properties

Kasahara S, Kato T, Takeya H, Hirata K, Shibauchi T, Matsuda Y, Terashima T

Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 532 - 532 2009.8

27pTC-4 Microwave penetration depth measurements on iron-arsenide high-temperature superconductors : Evidence for a full-gap superconductor

Hashimoto K, Shibauchi T, Kato T, Ikada K, Tonegawa S, Okazaki R, Shishido H, Ishikado M, Kito H, Iyo A, Eisaki H, Shamoto S, Kasahara S, Takeya H, Hirata K, van der Beek C. J, Konczykowski M, Terashima T, Matsuda Y

Meeting abstracts of the Physical Society of Japan 64 ( 1 ) 555 - 555 2009.3

28aPS-15 Crystal Growth of Sr(K)Fe_2As_2 Superconductors

Takeya H., Kasahara S., Hirata K.

Meeting abstracts of the Physical Society of Japan 64 ( 1 ) 599 - 599 2009.3

Superconducting Properties of Noncentrosymmetric Li(2)(Pt(1-x)Pd(x))(3)B Superconductors Reviewed

H. Takeya, S. Kasahara, M. ElMassalami, K. Hirata, K. Togano

INTERNATIONAL CONFERENCE ON SUPERCONDUCTIVITY AND MAGNETISM (ICSM) 153 2009

Language：English Publisher：IOP PUBLISHING LTD

Superconductivity has been found in two Li-containing compounds, Li(2)Pt(3)B and Li(2)Pd(3)B, which show superconducting transition at temperatures 2.5 K and 7.2 K, respectively, and have the same cubic structure (P4(3)32) without mirror or inversion symmetry. Because the compounds are noncentrosymmetric, it is interesting to study the symmetries of the superconducting gap function and Cooper pairs. The specific heat of Li(2)(Pt(1-x)Pd(x))(3)B [x = 0, 0.5, 1] was measured. The Pd-concentration (x)-dependent electronic specific heat (C(es)) of Li(2)(Pt(1-x)Pd(x))(3)B at low temperatures << T(c) showed distinctly different features on varying x. The temperature dependence of Ces for one end member, Li(2)Pd(3)B, follows an exponential behavior as in conventional superconductors, while those of Li(2)Pd(1.5)Pt(1.5)B and Li(2)Pt(3)B follow a quadratic one, suggesting the existence of line nodes in the superconducting gap. This contrasting result conceivably originates from the difference in the strengths of the spin-orbit coupling of the Pt- and Pd-based compounds.

DOI： 10.1088/1742-6596/153/1/012028

Web of Science

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21aPS-122 Substitution Effect and Physical Properties of Li_2(Pd/Pt)_3B Superconductors

Takeya H., Kasahara S., Massalami M. El., Hirata K., Togano K.

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 521 - 521 2008.8

21aPS-72 Antiferromagnetism in the Ce-based U_3Ni_4Si_4-type compounds and serch for the quantum critical pointe

Kasahara S, Fujii H, Mochiku T, Takeya H, Hirata K

Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 509 - 509 2008.8

24aPS-93 Sample Characterization and Physical Properties of Li_2(Pd,Pt)_3B Superconductor

Takeya H., Kasahara S., Massalami M.El., Hirata K., Togano K.

Meeting abstracts of the Physical Society of Japan 63 ( 1 ) 592 - 592 2008.2

23pPSB-25 Superconductivity in tie compounds of U_3Ni_4Si_4-type structure

Kasahara S, Fujii H, Mochiku T, Takeya H, Hirata K

Meeting abstracts of the Physical Society of Japan 63 ( 1 ) 551 - 551 2008.2

21aPS-130 Specific Heat of Noncentrosymmetrical Superconductor, Li_2(Pt_xPd_<1-x>)_3B

Takeya H., Kasahara S., Massalami M.El., Hirata K., Mochiku T., Togano K.

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 547 - 547 2007.8

22pWH-13 Low temperature specific teat of novel superconductors La_3M_4X_4 (M=Ni, Pd; X=Ge, Si) with TiCr_2Si_2-AlB_2 layered structure

Kasahara S, Fujii H, Mochiku T, Takeya H, Hirata K

Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 609 - 609 2007.8

19aPS-121 Specific Heat and Physical Properties of Li_2(Pd,Pt)_3B Superconductor

Takeya H., Kasahara S., Massalami M.EI., Hirata K., Mochiku T., Togano K.

Meeting abstracts of the Physical Society of Japan 62 ( 1 ) 584 - 584 2007.2

19aPS-107 Superconductivity in La_3Ni_4X_4(X=Si,Ge)

Fujii Hiroki, Kasahara Shigeru

Meeting abstracts of the Physical Society of Japan 62 ( 1 ) 581 - 581 2007.2

18pWF-3 Superconductivity and the thermal properties of La_3Pd_4Ge_4

Kasahara S, Fujii H, Mochiku T, Takeya H, Hirata K

Meeting abstracts of the Physical Society of Japan 62 ( 1 ) 499 - 499 2007.2

25aYA-9 Positive local magnetization in PrOs_4Sb_<12>

Kasahara S, Hirata K, Tamegai T, Sugawara H, Kikuchi D, Sato H

Meeting abstracts of the Physical Society of Japan 61 ( 2 ) 484 - 484 2006.8

30pXC-4 Superconducting Properties of Pb Nanowires

Ishii S, Ooi S, Kasahara S, Ochiai Y, Hirata K

Meeting abstracts of the Physical Society of Japan 61 ( 1 ) 708 - 708 2006.3

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