教師資料查詢 | 類別: 期刊論文 | 教師: 李啟正 LEE, CHI-CHENG (瀏覽個人網頁)

標題:A Weyl Fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class
學年103
學期2
出版(發表)日期2015/06/12
作品名稱A Weyl Fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class
作品名稱(其他語言)
著者Shin-Ming Huang; Su-Yang Xu; Ilya Belopolski; Chi-Cheng Lee; Guoqing Chang; BaoKai Wang; Nasser Alidoust; Guang Bian; Madhab Neupane; Chenglong Zhang; Shuang Jia; Arun Bansil; Hsin Lin; M. Zahid Hasan
單位
出版者
著錄名稱、卷期、頁數Nature Communications 6, 7373
摘要Weyl fermions are massless chiral fermions that play an important role in quantum field theory but have never been observed as fundamental particles. A Weyl semimetal is an unusual crystal that hosts Weyl fermions as quasiparticle excitations and features Fermi arcs on its surface. Such a semimetal not only provides a condensed matter realization of the anomalies in quantum field theories but also demonstrates the topological classification beyond the gapped topological insulators. Here, we identify a topological Weyl semimetal state in the transition metal monopnictide materials class. Our first-principles calculations on TaAs reveal its bulk Weyl fermion cones and surface Fermi arcs. Our results show that in the TaAs-type materials the Weyl semimetal state does not depend on fine-tuning of chemical composition or magnetic order, which opens the door for the experimental realization of Weyl semimetals and Fermi arc surface states in real materials.
關鍵字Quantum Hall;Theoretical physics
語言英文
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式,電子版
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