研究者詳細 - 近藤　隆祐

論文 - 近藤　隆祐

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Structural and Superconducting Properties of Bi₂Rh₃(Se_1–xS_x)₂ (x = 0–1.0) 査読

63 ( 45 ) 21531 - 21540 2024年10月

Control of Polar/Antipolar Layered Organic Semiconductors by the Odd‐Even Effect of Alkyl Chain 査読

Satoru Inoue, Toshiki Higashino, Kiyoshi Nikaido, Ryo Miyata, Satoshi Matsuoka, Mutsuo Tanaka, Seiji Tsuzuki, Sachio Horiuchi, Ryusuke Kondo, Ryoko Sagayama, Reiji Kumai, Daiki Sekine, Takayoshi Koyanagi, Masakazu Matsubara, Tatsuo Hasegawa

Advanced Science 11 ( 13 ) 2024年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Wiley

Abstract

Some rodlike organic molecules exhibit exceptionally high layered crystallinity when composed of a link between π‐conjugated backbone (head) and alkyl chain (tail). These molecules are aligned side‐by‐side unidirectionally to form self‐organized polar monomolecular layers, providing promising 2D materials and devices. However, their interlayer stacking arrangements have never been tunable, preventing the unidirectional arrangements of molecules in whole crystals. Here, it is demonstrated that polar/antipolar interlayer stacking can be systematically controlled by the alkyl carbon number n, when the molecules are designed to involve effectively weakened head‐to‐head affinity. They exhibit remarkable odd–even effect in the interlayer stacking: alternating head‐to‐head and tail‐to‐tail (antipolar) arrangement in odd‐n crystals, and uniform head‐to‐tail (polar) arrangement in even‐n crystals. The films show excellent field‐effect transistor characteristics presenting unique polar/antipolar dependence and considerably improved subthreshold swing in the polar films. Additionally, the polar films present enhanced second‐order nonlinear optical response along normal to the film plane. These findings are key for creating polarity‐controlled optoelectronic materials and devices.

DOI： 10.1002/advs.202308270

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Pressure Dependence of the Structural and Superconducting Properties of the Bi-Based Superconductor Bi₂Pd₃Se₂ 査読

Zhiyan Zhang, Mitsuki Ikeda, Masaki Utsumi, Yuki Yamamoto, Hidenori Goto, Ritsuko Eguchi, Yen-Fa Liao, Hirofumi Ishii, Yasuhiro Takabayashi, Koichi Hayashi, Ryusuke Kondo, Tatsuo C. Kobayashi, Yoshihiro Kubozono

Inorganic Chemistry 63 ( 5 ) 2553 - 2561 2024年1月

Temperature-induced transformation between layered herringbone polymorphs in molecular bilayer organic semiconductors 査読

Shunto Arai, Satoru Inoue, Mutsuo Tanaka, Seiji Tsuzuki, Ryusuke Kondo, Reiji Kumai, Tatsuo Hasegawa

Physical Review Materials 7 ( 2 ) 2023年2月

Highly stable and isomorphic donor–acceptor stacking in a family of n-type organic semiconductors of BTBT–TCNQ derivatives 査読

Satoshi Matsuoka, Kazuma Ogawa, Ryota Ono, Kiyoshi Nikaido, Satoru Inoue, Toshiki Higashino, Mutsuo Tanaka, Jun'ya Tsutsumi, Ryusuke Kondo, Reiji Kumai, Seiji Tsuzuki, Shunto Arai, Tatsuo Hasegawa

Journal of Materials Chemistry C 10 ( 43 ) 16471 - 16479 2022年

Spin Dynamics in the Mixed Stack Charge Transfer Complex, (BEDO-TTF)(Cl2TCNQ) 査読

Ko-ichi Hiraki, Masashi Takahashi, Toshihiro Takahashi, Tatsuo Hasegawa, Ryusuke Kondo, Seiichi Kagoshima

Journal of the Physical Society of Japan 89 ( 7 ) 074706 - 074706 2020年7月

Multiple charge density waves compete in ternary rare-earth nickel carbides,RNiC2(R: Y, Dy, Ho, and Er) 査読

H. Maeda, Ryusuke Kondo, Y. Nogami

PHYSICAL REVIEW B 100 104107 2019年9月

Possible charge order structure of stoichiometric YbFe2O4 査読

Kosuke Fujiwara, Tomoyuki Karasudani, Mamoru Fukunaga, Hiroyuki Kobayashi, Jun Kano, Pierre-Eymeric Janolin, Jean-Michel Kiat, Yoshio Nogami, Ryusuke Kondo, Naoshi Ikeda

FERROELECTRICS 512 ( 1 ) 85 - 91 2017年

Interplay of Charge-Density Wave and Magnetic Order in Ternary Rare-Earth Nickel Carbides, RNiC2 (R = Pr and Nd) 査読

Nobuki Yamamoto, Ryusuke Kondo, Hiroyuki Maeda, Yoshio Nogami

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 82 ( 12 ) 2013年12月

Reproducible synthetic method for the topological superconductor CuxBi2Se3 査読

Ryusuke Kondo, Taiki Yoshinaka, Yoshinori Imai, Atsutaka Maeda

Journal of the Physical Society of Japan 82 ( 6 ) 2013年6月

Superconductivity at 5.4 K in beta-Bi2Pd 査読

Yoshinori Imai, Fuyuki Nabeshima, Taiki Yoshinaka, Kosuke Miyatani, Ryusuke Kondo, Seiki Komiya, Ichiro Tsukada, Atsutaka Maeda

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 81 ( 11 ) 2012年11月

Ultrafast photo-induced insulator-to-metal transition in the spin density wave system of (TMTSF)(2)PF6 査読

Shinichi Watanabe, Ryusuke Kondo, Seiichi Kagoshima, Ryo Shimano

PHYSICA B-CONDENSED MATTER 405 ( 11 ) S360 - S362 2010年6月

Electronic states of organic quasi-two dimensional conductor beta ''-(DODHT)(2)PF6 center dot Charge ordering and superconductivity 査読

M. Higa, R. Kondo, A. Murata, S. Kagoshima, H. Nishikawa, K. Yakushi

PHYSICA B-CONDENSED MATTER 405 ( 11 ) S172 - S175 2010年6月

Interplay of charge-density waves and superconductivity in the organic conductor β"-(BEDT-TTF)2AuBr2 査読

Ryusuke Kondo, Momoka Higa, Seiichi Kagoshima, Noriaki Hanasaki, Yoshio Nogami, Hiroyuki Nishikawa

Phys. Rev. B 81 ( 2 ) 024519 2010年1月

Observation of ultrafast photoinduced closing and recovery of the spin-density-wave gap in (TMTSF)(2)PF6 査読

Shinichi Watanabe, Ryusuke Kondo, Seiichi Kagoshima, Ryo Shimano

PHYSICAL REVIEW B 80 ( 22 ) 2009年12月

Effects of Hydrostatic Pressure and Uniaxial Strain on Spin-Peierls Transition in an Organic Radical Magnet, BBDTA center dot InCl4 査読

Masaki Mito, Seiichiro Kawagoe, Hiroyuki Deguchi, Seishi Takagi, Wataru Fujita, Kunio Awaga, Ryusuke Kondo, Seiichi Kagoshima

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 78 ( 12 ) 2009年12月

Crystal and Electronic Structures of the Quasi-Two-Dimensional Organic Conductor alpha-(BEDT-TTF)(2)I-3 and Its Selenium Analogue alpha-(BEDT-TSeF)(2)I-3 under Hydrostatic Pressure at Room Temperature 査読

Ryusuke Kondo, Seiichi Kagoshima, Naoya Tajima, Reizo Kato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 78 ( 11 ) 2009年11月

Ultrafast terahertz probe of spin-density wave dynamics in organic conductor (TMTSF)(2)PF6 査読

S. Watanabe, R. Kondo, S. Kagoshima, R. Shimano

2009 CONFERENCE ON LASERS AND ELECTRO-OPTICS AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2009), VOLS 1-5 2993 - + 2009年

Spin-density-wave gap in (TMTSF)(2)PF6 probed by reflection-type terahertz time-domain spectroscopy 査読

Shinichi Watanabe, Ryusuke Kondo, Seiichi Kagoshima, Ryo Shimano

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS 245 ( 12 ) 2688 - 2691 2008年12月

Charge ordered insulating phases of DODHT salts with octahedral anions and a new radical salt, β″-(DODHT)2TaF6

H Nishikawa, H Oshio, M Higa, R Kondo, S Kagoshima, A Nakao, H Sawa, S Yasuzuka, K Murata

Journal of Physics: Conference Series 132 012023 - 012023 2008年10月

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