論文 - 久我 健太郎
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Huge Peltier conductivity in valence fluctuating material Yb3Si5
Kuga, K., Hirata, K., Matsunami, M., Takeuchi, T.
Applied Physics Letters 123 ( 20 ) 202201-1 - 202201-5 2023年11月
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Observation of a critical charge mode in a strange metal
Hisao Kobayashi, Yui Sakaguchi, Hayato Kitagawa, Momoko Oura, Shugo Ikeda, Kentaro Kuga, Shintaro Suzuki, Satoru Nakatsuji, Ryo Masuda, Yasuhiro Kobayashi, Makoto Seto, Yoshitaka Yoda, Kenji Tamasaku, Yashar Komijani, Premala Chandra, Piers Coleman
Science 379 ( 6635 ) 908 - 911 2023年03月
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Anisotropy-driven quantum criticality in an intermediate valence system.
Mihael S Grbić, Eoin C T O'Farrell, Yosuke Matsumoto, Kentaro Kuga, Manuel Brando, Robert Küchler, Andriy H Nevidomskyy, Makoto Yoshida, Toshiro Sakakibara, Yohei Kono, Yasuyuki Shimura, Michael L Sutherland, Masashi Takigawa, Satoru Nakatsuji
Nature Communications 13 ( 1 ) 2141-1 - 2141-8 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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Quantum valence criticality in a correlated metal
Kuga, K; Matsumoto, Y; Okawa, M; Suzuki, S; Tomita, T; Sone, K; Shimura, Y; Sakakibara, T; Nishio-Hamane, D; Karaki, Y; Takata, Y; Matsunami, M; Eguchi, R; Taguchi, M; Chainani, A; Shin, S; Tamasaku, K; Nishino, Y; Yabashi, M; Ishikawa, T; Nakatsuji, S
SCIENCE ADVANCES 4 ( 2 ) eaao3547 - 6 2018年02月
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Strange metal without magnetic criticality
Tomita, T; Kuga, K; Uwatoko, Y; Coleman, P; Nakatsuji, S
SCIENCE 349 ( 6247 ) 506 - 509 2015年07月
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Magnetic order induced by Fe substitution of Al site in the heavy-fermion systems α-YbAlB<inf>4</inf> and β-YbAlB<inf>4</inf>
Kentaro Kuga, Gregory Morrison, Larico Treadwell, Julia Y. Chan, Satoru Nakatsuji
Physical Review B - Condensed Matter and Materials Physics 86 ( 22 ) 224413-1 - 6 2012年12月
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Spin-Orbital Short-Range Order on a Honeycomb-Based Lattice
Nakatsuji, S; Kuga, K; Kimura, K; Satake, R; Katayama, N; Nishibori, E; Sawa, H; Ishii, R; Hagiwara, M; Bridges, F; Ito, TU; Higemoto, W; Karaki, Y; Halim, M; Nugroho, AA; Rodriguez-Rivera, JA; Green, MA; Broholm, C
SCIENCE 336 ( 6081 ) 559 - 563 2012年05月
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Quantum Criticality Without Tuning in the Mixed Valence Compound β-YbAlB<sub>4</sub>
Matsumoto, Y; Nakatsuji, S; Kuga, K; Karaki, Y; Horie, N; Shimura, Y; Sakakibara, T; Nevidomskyy, AH; Coleman, P
SCIENCE 331 ( 6015 ) 316 - 319 2011年01月
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Superconducting properties of the non-fermi-liquid system β-YbAlB<sub>4</sub>
Kuga, K; Karaki, Y; Matsumoto, Y; Machida, Y; Nakatsuji, S
PHYSICAL REVIEW LETTERS 101 ( 13 ) 137004-1 - 4 2008年09月
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Superconductivity and quantum criticality in the heavy-fermion system β-YbAlB<sub>4</sub>
Nakatsuji, S; Kuga, K; Machida, Y; Tayama, T; Sakakibara, T; Karaki, Y; Ishimoto, H; Yonezawa, S; Maeno, Y; Pearson, E; Lonzarich, GG; Balicas, L; Lee, H; Fisk, Z
NATURE PHYSICS 4 ( 8 ) 603 - 607 2008年08月
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Evidence for energy-dependent scattering dominating thermoelectricity in heavy fermion systems
Daiki Goto, Kentaro Kuga, Kiyohisa Tanaka, Tsunehiro Takeuchi, Masaharu Matsunami
Applied Physics Letters 127 ( 16 ) 161903 - 161903 2025年10月
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Coupling of magnetism and transport properties to the lattice degrees of freedom in NdBaCo2O5+δ (δ ~ 0.65)
Himanshu Pant, Saurabh Singh, Jaskirat Brar, Priyamedha Sharma, M Bharath, Kentaro Kuga, Tsunehiro Takeuchi, R Bindu
Journal of Physics: Condensed Matter 37 ( 13 ) 135603 - 135603 2025年02月
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Orbital hybridisation effects in B2 phase Cr doped Co2MnAl.
Swati Pathak, Saurabh Singh, S Khalid, Kentaro Kuga, Tsunehiro Takeuchi, R Bindu
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
Jaskirat Brar, Saurabh Singh, Kentaro Kuga, Priyamedha Sharma, M. Bharath, Tsunehiro Takeuchi, R. Bindu
Journal of Physics: Condensed Matter 35 ( 19 ) 2023年05月
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Valence fluctuation in Yb3Si5 probed by synchrotron X-ray photoemission spectroscopy
Kentaro Kuga, Masaharu Matsunami, Hidenori Fujiwara, Goro Nozue, Akane Ose, Akira Sekiyama, Akira Yasui, Satoru Hamamoto, Masaki Oura, Tsunehiro Takeuchi
Japanese Journal of Applied Physics 62 ( SD ) SD1014 - SD1014 2023年05月
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Thermoelectric performance of Fe2V0.9W0.1Al thin films deposited on n-type Si substrates
Machda, F., Singh, S., Kuga, K., Ang, A.K.R., Matsunami, M., Takeuchi, T.
Japanese Journal of Applied Physics 62 ( 5 ) 2023年05月
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Magneto-thermal conductivity effect and enhanced thermoelectric figure of merit in Ag2Te
Keisuke Hirata, Kentaro Kuga, Masaharu Matsunami, Minyue Zhu, Joseph P. Heremans, Tsunehiro Takeuchi
AIP Advances 13 ( 1 ) 2023年01月
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Multicritical phase diagram of PrMn1-xSb2 with two interacting magnetic elements
Takahiro Urata, Yusuke Takahashi, Kentaro Kuga, Tsunehiro Takeuchi, Hiroshi Ikuta
Physical Review B 106 ( 18 ) 2022年11月