2019/09/28 by Guyue Zhong, Q. Xie, Qiongtao Xie +1 · 1 citation
Materials Science · Physics and Astronomy · #2D Materials and Applications #Condensed matter physics #Electron #Graphene research and applications #Hall effect #Magnetic field #Materials science #Monolayer #Nanotechnology #Physics #Quantum Hall effect #Quantum dot #Quantum mechanics #Quantum spin Hall effect #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Topological Materials and Phenomena #cond-mat.mtrl-sci
paper · pdf · doi:10.1142/s2010324719400149
published in SPIN 09(04) (World Scientific)
arxiv created 2019/09/28 · openalex created_date 2019/10/03 · openalex publication_date 2019/12/01 · arxiv updated 2020/12/22 · openalex updated_date 2026/08/05
Based on first-principles calculations, we predict that the monolayer AuTe 2 Cl is a quantum spin Hall (QSH) insulator with a topological band gap about 10 meV. The three-dimensional (3D) AuTe 2 Cl is a topological semimetal that can be viewed as the monolayer stacking along [Formula: see text] axis. By studying the energy-level distribution of [Formula: see text] orbitals of Te atoms for the bulk and the monolayer, we find that the confinement effect driven [Formula: see text] band inversion is responsible for the topological nontrivial nature of monolayer. Since 3D bulk AuTe 2 Cl has already been experimentally synthesized, we expect that monolayer AuTe 2 Cl can be exfoliated from a bulk sample and the predicted QSH effect can be observed.