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Cyclotron resonance study of quasiparticle mass and scattering rate in the hidden-order and superconducting phases of URu$$_2$$Si$$_2$$

サイクロトロン共鳴によるURu$$_2$$Si$$_2$$の隠れた秩序相及び超伝導相における準粒子質量と散乱緩和時間の研究

利根川 翔*; 橋本 顕一郎*; 井加田 洸輔*; 鶴原 悠悟*; Lin, Y.-H.*; 宍戸 寛明*; 芳賀 芳範 ; 松田 達磨; 山本 悦嗣 ; 大貫 惇睦; 池田 浩章*; 松田 祐司*; 芝内 孝禎*

Tonegawa, Sho*; Hashimoto, Kenichiro*; Ikada, Kisuke*; Tsuruhara, Yugo*; Lin, Y.-H.*; Shishido, Hiroaki*; Haga, Yoshinori; Matsuda, Tatsuma; Yamamoto, Etsuji; Onuki, Yoshichika; Ikeda, Hiroaki*; Matsuda, Yuji*; Shibauchi, Takasada*

Detailed analyses of the cyclotron resonance lines in a uranium compound URu$$_2$$Si$$_2$$ are reported. The analyses of the resonance profiles reveals that the heavier branch of the split line has a larger scattering rate, providing evidence for the existence of hot-spot along the [110] direction. The result is consistent with the broken fourfold symmetry in the hidden-order phase.

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パーセンタイル:53.54

分野:Materials Science, Multidisciplinary

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