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Observation of two fine structures related to the hidden order in the spectral functions of URu$$_2$$Si$$_2$$

URu$$_2$$Si$$_2$$の光電子スペクトルにおける、隠れた秩序に起因した2つの微細構造

吉田 力矢*; 福井 仁紀*; 芳賀 芳範; 山本 悦嗣; 大貫 惇睦; 大川 万里生*; Malaeb, W.*; Shin, S.*; 村岡 祐治*; 横谷 尚睦*

Yoshida, Rikiya*; Fukui, Masaki*; Haga, Yoshinori; Yamamoto, Etsuji; Onuki, Yoshichika; Okawa, Mario*; Malaeb, W.*; Shin, S.*; Muraoka, Yuji*; Yokoya, Takayoshi*

The spectral functions of URu$$_2$$Si$$_2$$ in the hidden-order state are studied by means of ultrahigh-resolution angle-resolved photoemission spectroscopy. High signal-to-noise ratio data uncover the existence of two anomalous fine structures. The structures can be explained by neither ordinary bands nor the development of a hybridization of two states. As a possible origin, we suggest the existence of electron-mode coupling in the ordered state.

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パーセンタイル:41.1

分野:Materials Science, Multidisciplinary

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