论文类型：期刊论文
第一作者：Guyue Zhong
通讯作者：Gang Xu
合写作者：Q Xie
发表刊物：SPIN
收录刊物：SCI
学科门类：理学
一级学科：物理学
文献类型：J
卷号：9
期号：4
页面范围：1940014
ISSN号：2010-3247
发表时间：2019-12-10
影响因子：1.589
摘要：Based on first-principles calculations, we predict that the monolayer AuTe2Cl is a quantum spin Hall (QSH) insulator with a topological band gap about 10 meV. The three-dimensional (3D) AuTe2Cl is a topological semimetal that can be viewed as the monolayer stacking along axis. By studying the energy-level distribution of orbitals of Te atoms for the bulk and the monolayer, we find that the confinement effect driven band inversion is responsible for the topological nontrivial nature of monolayer. Since 3D bulk AuTe2Cl has already been experimentally synthesized, we expect that monolayer AuTe2Cl can be exfoliated from a bulk sample and the predicted QSH effect can be observed.
发布期刊链接：https://www.worldscientific.com/doi/abs/10.1142/s2010324719400149