Interlayer Ferromagnetism and High-Temperature Quantum Anomalous Hall Effect in \textit{p}-Doped MnBi$_2$Te$_4$ Multilayers

no code implementations • 19 Jan 2021 • Yulei Han, Shiyang Sun, Shifei Qi, Xiaohong Xu, Zhenhua Qiao

The interlayer antiferromagnetic coupling hinders the observation of quantum anomalous Hall effect in magnetic topological insulator MnBi$_2$Te$_4$.

Formation Energy Materials Science

Van der Waals Heterostructure Pt$_{2}$HgSe$_{3}$/CrI$_3$ for Topological Valleytronics

no code implementations • 24 Dec 2020 • Zheng Liu, Yulei Han, Yafei Ren, Qian Niu, Zhenhua Qiao

We identify a valley-polarized Chern insulator in the van der Waals heterostructure, Pt$_{2}$HgSe$_{3}$/CrI$_3$, for potential applications with interplay between electric, magnetic, optical, and mechanical effects.

Band Gap Materials Science