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Journal Articles

Magnetic phase diagram and Fermi surface properties of the heavy-fermion antiferromagnet UPd$$_{2}$$Cd$$_{20}$$

Hirose, Yusuke; Doto, Hiroshi*; Takeuchi, Tetsuya*; Miyake, Atsushi*; Tokunaga, Masashi*; Nakamura, Ai*; Homma, Yoshiya*; Aoki, Dai*; Honda, Fuminori*; Settai, Rikio*

Journal of Physics; Condensed Matter, 38(24), p.245601_1 - 245601_11, 2026/06

https://doi.org/10.1088/1361-648X/ae72e0
 Times Cited Count：0 Percentile：0.00(Physics, Condensed Matter)

Journal Articles

Ultrasonic observation of small Fermi surfaces in La$$T$$In$$_{5}$$ ($$T$$ = Co, Rh, Ir)

Kurihara, Ryosuke*; Hirose, Yusuke; Matsui, Kazuki*; Miyake, Atsushi*; Tsunoda, Ryoma*; Kondo, Masaki*; Settai, Rikio*; Akatsu, Mitsuhiro*; Nemoto, Yuichi*; Yaguchi, Hiroshi*; et al.

JJAP Conference Proceedings (Internet), 12, p.011006_1 - 011006_6, 2026/02

https://doi.org/10.56646/jjapcp.12.0_011006

no abstracts in English

Journal Articles

Metallization and pressure-induced superconductivity in carrier doped excitonic insulator (Ta$$_{1-x}$$Ti$$_x$$)$$_2$$NiSe$$_5$$

Tsuchida, Shun*; Hirose, Yusuke; Sekikawa, Takuya; Ono, Yoshiaki*; Hirahara, Takuya*; Sano, Sumika*; Kawaguchi, Shogo*; Kobayashi, Shintaro*; Uwatoko, Yoshiya*; Settai, Rikio*

Journal of the Physical Society of Japan, 94(11), p.114703_1 - 114703_7, 2025/10

https://doi.org/10.7566/JPSJ.94.114703
 Times Cited Count：2 Percentile：37.78(Physics, Multidisciplinary)

We investigated the carrier doping effect on an excitonic insulator Ta$$_2$$NiSe$$_5$$ by means of the electrical resistivity $$rho$$ and Hall coefficient $$R_{rm H}$$ using single crystals of (Ta$$_{1-x}$$Ti$$_x$$)$$_2$$NiSe$$_5$$, and band calculation. The excitonic transition temperature $$T_{rm c}$$ is continuously suppressed to 83 K at $$x$$ = 0.104 while preserving the crystal structure. With increasing substitution concentration $$x$$, a semiconducting increment of $$rho$$ and $$R_{rm H}$$ is strongly suppressed and a metallic behavior is observed at $$x$$ > 0.06. Ti substitution can realize an excitonic correlated metallic state. This metallization is explained by the hole doping effect based on the band calculations. Applying pressure to the carrier doped (Ta$$_{1-x}$$Ti$$_x$$)$$_2$$NiSe$$_5$$, we found superconductivity above 2.6 GPa, which is much smaller than that of Ta$$_2$$NiSe$$_5$$ around 8 GPa. The carrier doping induced by Ti substitution favors superconductivity in this compound.

Journal Articles

Characteristic Fermi surface properties in $$f$$-electron systems

Onuki, Yoshichika*; Settai, Rikio*; Haga, Yoshinori; Takeuchi, Tetsuya*; Hedo, Masato*; Nakama, Takao*

Quantum Science; The Frontier of Physics and Chemistry, p.21 - 63, 2022/10

https://doi.org/10.1007/978-981-19-4421-5_2

Journal Articles

Crossover phase diagram and electronic state in the heavy-fermion metamagnets UIr$$_2$$Zn$$_{20}$$ and UCo$$_2$$Zn$$_{20}$$

Hirose, Yusuke*; Takeuchi, Tetsuya*; Honda, Fuminori*; Yoshiuchi, Shingo*; Hagiwara, Masayuki*; Yamamoto, Etsuji; Haga, Yoshinori; Settai, Rikio*; Onuki, Yoshichika

Journal of the Physical Society of Japan, 84(7), p.074704_1 - 074704_10, 2015/07

https://doi.org/10.7566/JPSJ.84.074704
 Times Cited Count：8 Percentile：49.22(Physics, Multidisciplinary)

Journal Articles

X-ray absorption spectroscopy and novel electronic properties in heavy fermion compounds YbT$$_{2}$$Zn$$_{20}$$ (T: Rh and Ir)

Honda, Fuminori*; Hirose, Yusuke*; Miyake, Atsushi*; Mizumaki, Masaichiro*; Kawamura, Naomi*; Tsutsui, Satoshi*; Watanuki, Tetsu; Watanabe, Shinji*; Takeuchi, Tetsuya*; Settai, Rikio*; et al.

Journal of Physics; Conference Series, 592(1), p.012021_1 - 012021_5, 2015/03

https://doi.org/10.1088/1742-6596/592/1/012021
 Times Cited Count：3 Percentile：68.71(Physics, Atomic, Molecular & Chemical)

no abstracts in English

Journal Articles

Fermi surface, magnetic, and superconducting properties in actinide compounds

Onuki, Yoshichika; Settai, Rikio*; Haga, Yoshinori; Machida, Yo*; Izawa, Koichi*; Honda, Fuminori*; Aoki, Dai*

Comptes Rendus Physique, 15(7), p.616 - 629, 2014/08

https://doi.org/10.1016/j.crhy.2014.06.005
 Times Cited Count：8 Percentile：49.28(Astronomy & Astrophysics)

Journal Articles

Transport properties of UT$$_2$$Zn$$_{20}$$ (T: Co, Ir)

Hirose, Yusuke*; Takeuchi, Tetsuya*; Yoshiuchi, Shingo*; Yamamoto, Etsuji; Haga, Yoshinori; Settai, Rikio*; Onuki, Yoshichika

JPS Conference Proceedings (Internet), 3, p.011056_1 - 011056_6, 2014/06

https://doi.org/10.7566/JPSCP.3.011056

Journal Articles

Magnetic and Fermi surface properties of EuGa$$_4$$

Nakamura, Ai*; Hiranaka, Yuichi*; Hedo, Masato*; Nakama, Takao*; Miura, Yasunao*; Tsutsumi, Hiroki*; Mori, Akinobu*; Ishida, Kazuhiro*; Mitamura, Katsuya*; Hirose, Yusuke*; et al.

Journal of the Physical Society of Japan, 82(10), p.104703_1 - 104703_10, 2013/10

https://doi.org/10.7566/JPSJ.82.104703
 Times Cited Count：46 Percentile：84.31(Physics, Multidisciplinary)

Journal Articles

Heavy fermions and unconventional superconductivity in high-quality single crystals of rare-earth and actinide compounds

Onuki, Yoshichika; Settai, Rikio*; Sugiyama, Kiyohiro*; Takeuchi, Tetsuya*; Honda, Fuminori*; Haga, Yoshinori; Yamamoto, Etsuji; Matsuda, Tatsuma; Tateiwa, Naoyuki; Aoki, Dai*; et al.

Journal of the Korean Physical Society, 63(3), p.409 - 415, 2013/08

https://doi.org/10.3938/jkps.63.409
 Times Cited Count：3 Percentile：25.44(Physics, Multidisciplinary)

Journal Articles

Quadrupole effects in tetragonal crystals PrCu$$_2$$Si$$_2$$ and DyCu$$_2$$Si$$_2$$

Mitsumoto, Keisuke*; Goto, Saori*; Nemoto, Yuichi*; Akatsu, Mitsuhiro*; Goto, Terutaka*; Dung, N. D.*; Matsuda, Tatsuma; Haga, Yoshinori; Takeuchi, Tetsuya*; Sugiyama, Kiyohiro*; et al.

Journal of Physics; Condensed Matter, 25(29), p.296002_1 - 296002_8, 2013/07

https://doi.org/10.1088/0953-8984/25/29/296002
 Times Cited Count：3 Percentile：13.63(Physics, Condensed Matter)

Journal Articles

Single crystal growth and various electronic states in Yb-based compounds

Hirose, Yusuke*; Yoshiuchi, Shingo*; Nishimura, Naoto*; Sakaguchi, Junya*; Enoki, Kentaro*; Iwakawa, Ken*; Miura, Yasunao*; Sugiyama, Kiyohiro*; Onuki, Yoshichika; Settai, Rikio*; et al.

Journal of the Korean Physical Society, 62(12), p.1858 - 1861, 2013/06

https://doi.org/10.3938/jkps.62.1858
 Times Cited Count：0 Percentile：0.00(Physics, Multidisciplinary)

Journal Articles

Electronic states in antiferromagnet UCd$$_{11}$$ and reference compound ThCd$$_{11}$$; Studied by the de Haas-van Alphen effect

Hirose, Yusuke*; Miura, Yasunao*; Tsutsumi, Hiroki*; Yoshiuchi, Shingo*; Oya, Masahiro*; Sugiyama, Kiyohiro*; Takeuchi, Tetsuya*; Yamagami, Hiroshi*; Yamamoto, Etsuji; Haga, Yoshinori; et al.

Physica Status Solidi (B), 250(3), p.642 - 645, 2013/03

https://doi.org/10.1002/pssb.201200765
 Times Cited Count：5 Percentile：22.76(Physics, Condensed Matter)

Journal Articles

Anisotropic spin fluctuations in the heavy fermion systems; Case studies of CePd$$_5$$Al$$_2$$ and NpPd$$_5$$Al$$_2$$

Sakai, Hironori; Chudo, Hiroyuki; Tokunaga, Yo; Kambe, Shinsaku; Haga, Yoshinori; Ronning, F.*; Bauer, E. D.*; Thompson, J. D.*; Homma, Yoshiya*; Aoki, Dai*; et al.

Journal of the Physical Society of Japan, 81(Suppl.B), p.SB003_1 - SB003_6, 2012/12

https://doi.org/10.1143/JPSJS.81SB.SB003
 Times Cited Count：8 Percentile：47.91(Physics, Multidisciplinary)

In the so-called 115 family members with chemical formulae of Ce$$T$$In$$_5$$ ($$T$$=Co, Rh, Ir) and $$An$$$$T$$Ga$$_5$$ ($$An$$=U, Np, Pu), our analysis of the Knight shift and spin-lattice relaxation rates suggests that larger XY-type anisotropy in the antiferromagnetic spin fluctuations in the normal states would favor $$d$$-wave superconductivity with higher $$T_c$$. In order to examine this working hypothesis, the anisotropy ratios of antiferromagnetic fluctuations are derived from our NMR results for the superconductor NpPd$$_5$$Al$$_2$$ and antiferromagnet CePd$$_5$$Al$$_2$$, which are tetragonal compounds with a 115-related structure. CePd$$_5$$Al$$_2$$ shows Ising-type anisotropy, which is the same anisotropy as in the ordered state. On the other hand, NpPd$$_5$$Al$$_2$$ shows XY-type anisotropy just above $$T_c$$.

Journal Articles

Neutron scattering study on high-quality single crystals of non-centrosymmetric heavy-fermion superconductor CePt$$_{3}$$Si

Kaneko, Koji; Stockert, O.*; Skoulatos, M.*; Schneidewind, A.*; Takeuchi, Tetsuya*; Matsuda, Tatsuma; Haga, Yoshinori; Settai, Rikio*; Onuki, Yoshichika; Metoki, Naoto

Journal of the Physical Society of Japan, 81(Suppl.B), p.SB006_1 - SB006_7, 2012/12

https://doi.org/10.1143/JPSJS.81SB.SB006
 Times Cited Count：4 Percentile：31.09(Physics, Multidisciplinary)

Journal Articles

High-quality single crystal growth and unique electronic states under magnetic field and pressure in rare earth and actinide compounds

Onuki, Yoshichika; Settai, Rikio*; Takeuchi, Tetsuya*; Sugiyama, Kiyohiro*; Honda, Fuminori*; Haga, Yoshinori; Yamamoto, Etsuji; Matsuda, Tatsuma; Tateiwa, Naoyuki; Aoki, Dai*; et al.

Journal of the Physical Society of Japan, 81(Suppl.B), p.SB001_1 - SB001_18, 2012/12

https://doi.org/10.1143/JPSJS.81SB.SB001

Journal Articles

de Haas-van Alphen effect and Fermi surface properties in V$$_{5}$$Si$$_{3}$$

Tsutsumi, Hiroki*; Sakaguchi, Junya*; Miura, Yasunao*; Matsuda, Tatsuma; Haga, Yoshinori; Takeuchi, Tetsuya*; Harima, Hisatomo*; Settai, Rikio*; Onuki, Yoshichika

Journal of the Physical Society of Japan, 81(Suppl.B), p.SB027_1 - SB027_4, 2012/12

https://doi.org/10.1143/JPSJS.81SB.SB027
 Times Cited Count：1 Percentile：0.00(Physics, Multidisciplinary)

Journal Articles

Fermi surface and superconducting properties of non-centrosymmetric LaNiC$$_2$$

Hirose, Yusuke*; Kishino, Toshihiko*; Sakaguchi, Junya*; Miura, Yasunao*; Honda, Fuminori*; Takeuchi, Tetsuya*; Yamamoto, Etsuji; Haga, Yoshinori; Harima, Hisatomo*; Settai, Rikio*; et al.

Journal of the Physical Society of Japan, 81(11), p.113703_1 - 113703_4, 2012/11

https://doi.org/10.1143/JPSJ.81.113703
 Times Cited Count：25 Percentile：72.86(Physics, Multidisciplinary)

Journal Articles

Electrical and magnetic properties of quasicrystal approximants RCd$$_6$$ (R: rare earth)

Mori, Akinobu*; Ota, Hisashi*; Yoshiuchi, Shingo*; Iwakawa, Ken*; Taga, Yuki*; Hirose, Yusuke*; Takeuchi, Tetsuya*; Yamamoto, Etsuji; Haga, Yoshinori; Honda, Fuminori*; et al.

Journal of the Physical Society of Japan, 81(2), p.024720_1 - 024720_10, 2012/02

https://doi.org/10.1143/JPSJ.81.024720
 Times Cited Count：59 Percentile：87.01(Physics, Multidisciplinary)

Journal Articles

Characteristic heavy fermion properties in YbCu$$_2$$Si$$_2$$ and YbT$$_2$$Zn$$_{20}$$ (T: Co, Rh, Ir)

Onuki, Yoshichika; Yasui, Shinichi*; Matsushita, Masaki*; Yoshiuchi, Shingo*; Oya, Masahiro*; Hirose, Yusuke*; Dung, N. D.*; Honda, Fuminori*; Takeuchi, Tetsuya*; Settai, Rikio*; et al.

Journal of the Physical Society of Japan, 80(Suppl.A), p.SA003_1 - SA003_6, 2011/12

https://doi.org/10.1143/JPSJS.80SA.SA003

180 (Records 1-20 displayed on this page)