title: Two Dimensional Antiferromagnetic Chern Insulator: NiRuCl6.
abstract: Density functional theory (DFT) and Berry curvature calculations show that quantum anomalous Hall effect (QAHE) can be realized in two-dimensional(2D) antiferromagnetic (AFM) NiRuCl6. The results indicate that NiRuCl6behaves as an AFM Chern insulator and its spin-polarized electronic structure and strong spin-orbit coupling (SOC) are responsible for the QAHE. By tuning SOC, we found that the topological property of NiRuCl6arises from its energy band inversion. Considering the compatibility between the AFM and insulators, AFM Chern insulator provides a new way to archive high temperature QAHE in experiments due to its different magnetic coupling mechanism from that of ferromagnetic (FM) Chern insulator.
authors.affiliation: Key Laboratory of Low-dimensional Materials and Application Technology, School of Material Sciences and Engineering, Xiangtan University , Xiangtan 411105, China.
authors.forename: P
authors.initials: P
authors.lastname: Zhou
authors.affiliation: Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University , Xiangtan 411105, China.
authors.forename: C Q
authors.initials: CQ
authors.lastname: Sun
authors.affiliation: Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University , Xiangtan 411105, China.
authors.forename: L Z
authors.initials: LZ
authors.lastname: Sun
keywords: Chern insulator; antiferromagnetic; quantum anomalous Hall effect; spin-polarization