論文 - 久我 健太郎
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Huge Peltier conductivity in valence fluctuating material Yb<sub>3</sub>Si<sub>5</sub>
Kuga, K; Hirata, K; Matsunami, M; Takeuchi, T
APPLIED PHYSICS LETTERS 123 ( 20 ) 2023年11月
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Observation of a critical charge mode in a strange metal
Kobayashi, H; Sakaguchi, Y; Kitagawa, H; Oura, M; Ikeda, S; Kuga, K; Suzuki, S; Nakatsuji, S; Masuda, R; Kobayashi, Y; Seto, M; Yoda, Y; Tamasaku, K; Komijani, Y; Chandra, P; Coleman, P
SCIENCE 379 ( 6635 ) 908 - 911 2023年03月
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Anisotropy-driven quantum criticality in an intermediate valence system
Grbic, MS; O'Farrell, ECT; Matsumoto, Y; Kuga, K; Brando, M; Küchler, R; Nevidomskyy, AH; Yoshida, M; Sakakibara, T; Kono, Y; Shimura, Y; Sutherland, ML; Takigawa, M; Nakatsuji, S
NATURE COMMUNICATIONS 13 ( 1 ) 2141 - 2141 2022年04月
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Simultaneous enhancements of thermopower and electrical conductivity in quasi-one-dimensional <i>α</i>-YbAlB<sub>4</sub> single crystal
Kuga, K; Matsunami, M; Singh, S; Nakatsuji, S; Takeuchi, T
APPLIED PHYSICS LETTERS 119 ( 22 ) 2021年11月
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Effect of Anisotropic Hybridization in YbAlB<sub>4</sub> Probed by Linear Dichroism in Core-Level Hard X-Ray Photoemission Spectroscopy
Kuga, K; Kanai, Y; Fujiwara, H; Yamagami, K; Hamamoto, S; Aoyama, Y; Sekiyama, A; Higashiya, A; Kadono, T; Imada, S; Yamasaki, A; Tanaka, A; Tamasaku, K; Yabashi, M; Ishikawa, T; Nakatsuji, S; Kiss, T
PHYSICAL REVIEW LETTERS 123 ( 3 ) 036404 - 036404 2019年07月
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Orbital hybridisation effects in B2 phase Cr doped Co<sub>2</sub>MnAl
Pathak, S; Singh, S; Khalid, S; Kuga, K; Takeuchi, T; Bindu, R
JOURNAL OF PHYSICS-CONDENSED MATTER 35 ( 39 ) 2023年10月
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Lattice effects on the physical properties of half-doped perovskite ruthenates
Brar, J; Singh, S; Kuga, K; Sharma, P; Bharath, M; Takeuchi, T; Bindu, R
JOURNAL OF PHYSICS-CONDENSED MATTER 35 ( 19 ) 2023年05月
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Thermoelectric performance of Fe<sub>2</sub>V<sub>0.9</sub>W<sub>0.1</sub>Al thin films deposited on n-type Si substrates
Machda, F; Singh, S; Kuga, K; Ang, AKR; Matsunami, M; Takeuchi, T
JAPANESE JOURNAL OF APPLIED PHYSICS 62 ( 5 ) 2023年05月
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Valence fluctuation in Yb<sub>3</sub>Si<sub>5</sub> probed by synchrotron X-ray photoemission spectroscopy
Kuga, K; Matsunami, M; Fujiwara, H; Nozue, G; Ose, A; Sekiyama, A; Yasui, A; Hamamoto, S; Oura, M; Takeuchi, T
JAPANESE JOURNAL OF APPLIED PHYSICS 62 ( SD ) SD1014 - SD1014 2023年05月
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Magneto-thermal conductivity effect and enhanced thermoelectric figure of merit in Ag<sub>2</sub>Te
Hirata, K; Kuga, K; Matsunami, M; Zhu, MY; Heremans, JP; Takeuchi, T
AIP ADVANCES 13 ( 1 ) 2023年01月
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Multicritical phase diagram of PrMn1-xSb2 with two interacting magnetic elements
Urata, T; Takahashi, Y; Kuga, K; Takeuchi, T; Ikuta, H
PHYSICAL REVIEW B 106 ( 18 ) 2022年11月
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Synthesis and structural link to the electronic and magneto-transport properties of spin-orbit Mott insulator Sr<sub>2</sub>IrO<sub>4</sub>
Sharma, P; Singh, S; Kuga, K; Takeuchi, T; Bindu, R
JOURNAL OF PHYSICS-CONDENSED MATTER 34 ( 43 ) 2022年10月
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Electronic structure of silver chalcogenides investigated by hard x-ray photoemission spectroscopy and density functional theory calculations
Sato, K; Hirata, K; Singh, S; Kuga, K; Ogawa, F; Matsunami, M; Takeuchi, T
JOURNAL OF APPLIED PHYSICS 132 ( 4 ) 2022年07月
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Pressure-induced changes of valence fluctuation in β-YbAlB<sub>4</sub> probed by x-ray
Sakaguchi, Y; Ikeda, S; Kawamura, N; Mizumaki, M; Kuga, K; Suzuki, S; Sone, K; Nakatsuji, S; Kobayashi, H
PHYSICAL REVIEW B 105 ( 15 ) 2022年04月
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Synergetic Enhancement of the Power Factor and Suppression of Lattice Thermal Conductivity via Electronic Structure Modification and Nanostructuring on a Ni- and B-Codoped <i>p</i>-Type Si-Ge Alloy for Thermoelectric Application
Muthusamy, O; Singh, S; Hirata, K; Kuga, K; Harish, SK; Shimomura, M; Adachi, M; Yamamoto, Y; Matsunami, M; Takeuchi, T
ACS APPLIED ELECTRONIC MATERIALS 3 ( 12 ) 5621 - 5631 2021年12月
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High-temperature antiferromagnetism in Yb based heavy fermion systems proximate to a Kondo insulator
Suzuki, S; Takubo, K; Kuga, K; Higemoto, W; Ito, TU; Tomita, T; Shimura, Y; Matsumoto, Y; Bareille, C; Wadati, H; Shin, S; Nakatsuji, S
PHYSICAL REVIEW RESEARCH 3 ( 2 ) 2021年05月
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Strong in-plane anisotropy in the electronic structure of fixed-valence β-LuAlB<sub>4</sub>
Reiss, P; Baglo, J; Tan, HE; Chen, XY; Friedemann, S; Kuga, K; Grosche, FM; Nakatsuji, S; Sutherland, M
PHYSICAL REVIEW B 102 ( 8 ) 2020年08月
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Ground State Local 4f Symmetry of CeAgSb2 Probed by Linearly Polarized Hard X-ray Photoemission
H. Fujiwara, Y. Kondo, S. Hamamoto, Y. Kanai-Nakata, K. Kuga, A. Yamasaki, A. Higashiya, T. Kadono, S. Imada, T. Kiss, A. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, T. Ebihara, A. Sekiyama
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) 2020年03月
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Observation of Electronic Structures in Sr-Based Iridates by Bulk-Sensitive Photoemission Spectroscopy
Koya Nakagawa, Hidenori Fujiwara, Satoru Hamamoto, Sho Miyazaki, Yasuhiro Nakatani, Kentaro Kuga, Atsushi Higashiya, Toshiharu Kadono, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Takayuki Muro, Shin Imada, Akira Sekiyama, Kouichi Takase, Hiromi Kobori, Atsushi Yamasaki
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) 30 011146-1 - 6 2020年03月
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Local 4f Electronic Structure in PrAg2In Studied by Polarized X-Ray Absorption and Photoemission Spectroscopy
Satoru Hamamoto, Shuhei Fujioka, Yuina Kanai-Nakata, Kohei Yamagami, Kentaro Kuga, Hidenori Fujiwara, Takayuki Kiss, Hiroyuki S. Suzuki, Atsushi Higashiya, Atsushi Yamasaki, Shin Imada, Arata Tanaka, Yukiharu Takeda, Yuji Saitoh, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Akira Sekiyama
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) 30 011113-1 - 5 2020年03月
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Linearly Polarized Hard X-Ray Photoemission Spectroscopy of PrBe13
Satoru Hamamoto, Yuina Kanai-Nakata, Hidenori Fujiwara, Kentaro Kuga, Takayuki Kiss, Atsushi Higashiya, Atsushi Yamasaki, Shin Imada, Arata Tanaka, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Hiroyuki Hidaka, Tatsuya Yanagisawa, Hiroshi Amitsuka, Akira Sekiyama
Proceedings of J-Physics 2019: International Conference on Multipole Physics and Related Phenomena 29 012010-1 - 6 2020年02月
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Linear polarization-dependent core-level photoemission spectroscopy in Yb-based valence fluctuating system
Kuga, K; Kanai, Y; Fujiwara, H; Yamagami, K; Hamamoto, S; Aoyama, Y; Sekiyama, A; Higashiya, A; Kadono, T; Imada, S; Yamasaki, A; Tamasaku, K; Yabashi, M; Ishikawa, T; Nakatsuji, S; Kiss, T
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA 238 146889-1 - 4 2020年01月
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Observation of the 4<i>f</i> ground-state symmetry in strongly correlated cubic Pr compounds probed by linearly polarized 3<i>d</i> core-level photoemission spectroscopy
Hamamoto, S; Kanai, Y; Fujioka, S; Nakatani, Y; Fujiwara, H; Kuga, K; Kiss, T; Higashiya, A; Yamasaki, A; Imada, S; Tanaka, A; Tamasaku, K; Yabashi, M; Ishikawa, T; Hidaka, H; Yanagisawa, T; Amitsuka, H; Matsumoto, KT; Onimaru, T; Takabatake, T; Sekiyama, A
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA 238 146885-1 - 4 2020年01月
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CePd<sub>3</sub>と関連物質における熱電特性と電子構造の研究
尾川 史武, 久我 健太郎, 平田 圭介, 松波 雅治, 竹内 恒博
日本物理学会講演概要集 75.1 ( 0 ) 1904 - 1904 2020年