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 en
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117190 )