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Report No.

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

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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Category:Materials Science, Multidisciplinary



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