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

非磁性参照物質ThRu$$_2$$Si$$_2$$とLaRu$$_2$$Si$$_2$$との比較によるURu$$_2$$Si$$_2$$の磁気的電気的性質

江見 直哉*; 濱端 良輔*; 中山 大将*; 三木 俊宙*; 小山 岳秀*; 上田 光一*; 水戸 毅*; 小堀 洋*; 松本 裕司*; 芳賀 芳範; 山本 悦嗣; Fisk, Z.*; 辻井 直人*

Emi, Naoya*; Hamabata, Ryosuke*; Nakayama, Daisuke*; Miki, Toshihiro*; Koyama, Takehide*; Ueda, Koichi*; Mito, Takeshi*; Kohori, Yo*; Matsumoto, Yuji*; Haga, Yoshinori; Yamamoto, Etsuji; Fisk, Z.*; Tsujii, Naohito*

NMR/NQR measurements have been carried out on ThRu$$_2$$Si$$_2$$ and LaRu$$_2$$Si$$_2$$ which are the nonmagnetic references of the heavy fermion URu$$_2$$Si$$_2$$. Ru-NQR measurements suggest the relatively close electronic configuration between ThRu$$_2$$Si$$_2$$ and URu$$_2$$Si$$_2$$ at high temperature. However, significant delocalization was observed in URu$$_2$$Si$$_2$$ at low temperatures. Si-NMR experiments on URu$$_2$$Si$$_2$$ revealed Ising-like spin fluctuations in the hidden-order state.

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パーセンタイル:31.29

分野:Physics, Multidisciplinary

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