Indexed by: Journal paper

First Author: 徐刚

Correspondence Author: 齐小亮

Co-author: Gang Xu, Jing Wang, Binghai Yan, Xiao-Liang Qi

Journal: Physical Review B

Included Journals: SCI

Discipline: Science

First-Level Discipline: Physics

Document Type: J

Volume: 90

Issue: 10

Date of Publication: 2014-09-29

Abstract: Time-reversal breaking topological superconductors are new states of matter which can support Majorana zero modes at the edge. In this Rapid Communication, we propose a different realization of one-dimensional topological superconductivity and Majorana zero modes. The proposed system consists of a monolayer of transition-metal dichalcogenides M X 2 (M= Mo, W; X= S, Se) on top of a superconducting substrate. Based on first-principles calculations, we show that a zigzag edge of the monolayer M X 2 terminated by a metal atom M has edge states with strong spin-orbit coupling.