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Journal Articles

Nonmagnetic-magnetic transition and magnetically ordered structure in SmS

Yoshida, Shogo*; Koyama, Takehide*; Yamada, Haruhiko*; Nakai, Yusuke*; Ueda, Koichi*; Mito, Takeshi*; Kitagawa, Kentaro*; Haga, Yoshinori

Physical Review B, 103(15), p.155153_1 - 155153_5, 2021/04

 Times Cited Count:0 Percentile:0(Materials Science, Multidisciplinary)

Journal Articles

Magnetic and electronic properties of URu$$_2$$Si$$_2$$ revealed by comparison with nonmagnetic references ThRu$$_2$$Si$$_2$$ and LaRu$$_2$$Si$$_2$$

Emi, Naoya*; Hamabata, Ryosuke*; Nakayama, Daisuke*; Miki, Toshihiro*; Koyama, Takehide*; Ueda, Koichi*; Mito, Takeshi*; Kohori, Yo*; Matsumoto, Yuji*; Haga, Yoshinori; et al.

Journal of the Physical Society of Japan, 84(6), p.063702_1 - 063702_4, 2015/06

 Times Cited Count:10 Percentile:64.05(Physics, Multidisciplinary)

Journal Articles

Observation of the partial Fermi surface quenching in the noncentrosymmetric superconductor Mo$$_3$$Al$$_2$$C

Koyama, Takehide*; Ozaki, Yuzuru*; Ueda, Koichi*; Mito, Takeshi*; Kohara, Takao*; Waki, Takeshi*; Tabata, Yoshikazu*; Michioka, Chishiro*; Yoshimura, Kazuyoshi*; Suzuki, Michito; et al.

Journal of the Physical Society of Japan, 81(Suppl.B), p.SB008_1 - SB008_5, 2012/12

 Times Cited Count:1 Percentile:11.71(Physics, Multidisciplinary)

The normal state properties of a noncentrosymmetric superconductor Mo$$_3$$Al$$_2$$C are studied by means of the nuclear magnetic resonance (NMR) experiment. The change of NMR line shape and the peak of the nuclear spin-echo decay rate at $$simeq$$ 130 K indicate that the Mo$$_3$$Al$$_2$$C exhibits the phase transition prior to the emergence of superconductivity. The reduction in the conduction electron density is inferred from the decrease in the nuclear spin-lattice relaxation rate. The nature of the newly found phase transition is discussed by considering the result of the first principle calculations, indicating a good nesting property of the Fermi surfaces.

Journal Articles

Partial gap opening on the Fermi surface of the noncentrosymmetric superconductor Mo$$_3$$Al$$_2$$C

Koyama, Takehide*; Ozaki, Yuzuru*; Ueda, Koichi*; Mito, Takeshi*; Kohara, Takao*; Waki, Tsuyoshi*; Tabata, Yoshikazu*; Michioka, Chishiro*; Yoshimura, Kazuyoshi*; Suzuki, Michito; et al.

Physical Review B, 84(21), p.212501_1 - 212501_4, 2011/12

 Times Cited Count:9 Percentile:42.37(Materials Science, Multidisciplinary)

The results of $$^{27}$$Al nuclear magnetic resonance and specific-heat measurements of the noncentrosymmetric superconductor Mo$$_3$$Al$$_2$$C are reported. The phase transition around 130 K is inferred from a distinct change in the NMR spectrum, a clear peak in the spin-echo decay rate, and an anomaly in the specific heat. Possibility of charge-density wave ordering around 130 K is discussed by calculating the Fermi surfaces in the normal states and considering the partial quenching of the Fermi surfaces with the decrease in 1/$$T$$$$_1$$ below the superconducting transition temperature.

Journal Articles

$$^{115}$$In-NQR study of antiferromagnetism and superconductivity in CeRhIn$$_5$$ and CeIn$$_3$$ under pressure

kawasaki, Shinji*; Yashima, Mitsuharu*; kotegawa, Yu*; Mito, Takeshi*; Kawasaki, Yu*; Zheng, G.-Q.*; Kitaoka, Yoshio*; Shishido, Hiroaki*; Araki, Shingo*; Aoki, Dai*; et al.

Journal of Physics and Chemistry of Solids, 67(1-3), p.497 - 499, 2006/01

 Times Cited Count:2 Percentile:14.21(Chemistry, Multidisciplinary)

We report the novel phase diagram of superconductivity (SC) and antiferromagnetism (AFM) in heavy-fermion (HF) pressure ($$P$$)-induced superconductors CeRhIn$$_5$$ and CeIn$$_3$$ through nuclear-quadrupole-resonance (NQR) measurements under $$P$$. The $$P$$-induced superconductivity in CeRhIn$$_5$$ coexists with AFM on a microscopic level in 1.5-1.9 GPa. By contrast, in CeIn$$_3$$, the $$P$$-induced phase separation of AFM and paramagnetism (PM) takes place without any trace of a quantum phase transition. The outstanding finding is that SC sets in at both the phasesmagnetically separated into AFM and PM in 2.28-2.5 GPa.

JAEA Reports

Radiation monitoring of JRR-2 during its experiment and power-up test

Fukuda, Seiji; Kato, Jinzo; Onishi, Takeshi; Watanabe, Kozo; Okubo, Katsuichi; Ouchi, Masafusa; Isozaki, Hiroshi; Seki, Mamoru; Mito, Norio; Tsuruo, Akira; et al.

JAERI 1028, 55 Pages, 1962/10

JAERI-1028.pdf:4.9MB

no abstracts in English

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