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Experimental determination of the topological phase diagram in Cerium monopnictides

セリウムモノニクタイドにおけるトポロジー相図の実験的決定

黒田 健太*; 越智 正之*; 鈴木 博之*; 平山 元昭*; 中山 光大*; 野口 亮*; Bareille, C.*; 明比 俊太朗*; 國定 聡*; 室 隆桂之*; Watson, M. D.*; 北澤 英明*; 芳賀 芳範; Kim, T.*; Hoesch, M.*; Shin, S.*; 有田 亮太郎*; 近藤 猛*

Kuroda, Kenta*; Ochi, Masayuki*; Suzuki, Hiroyuki*; Hirayama, Motoaki*; Nakayama, Mitsuhiro*; Noguchi, Ryo*; Bareille, C.*; Akebi, Shuntaro*; Kunisada, So*; Muro, Takayuki*; Watson, M. D.*; Kitazawa, Hideaki*; Haga, Yoshinori; Kim, T. K.*; Hoesch, M.*; Shin, S.*; Arita, Ryotaro*; Kondo, Takeshi*

We use bulk-sensitive soft X-ray angle-resolved photoemission spectroscopy and investigate bulk electronic structures of Ce monopnictides (CeX; X=P, As, Sb and Bi). By exploiting a paradigmatic study of the band structures as a function of their spin-orbit coupling (SOC), we draw the topological phase diagram of CeX and unambiguously reveal the topological phase transition from a trivial to a nontrivial regime in going from CeP to CeBi induced by the band inversion.

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パーセンタイル:10.74

分野:Physics, Multidisciplinary

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