Reentrant quantum anomalous Hall effect in molecular beam epitaxy-grown MnBi2Te4 thin films

Autor:	Li, Yuanzhao, Bai, Yunhe, Feng, Yang, Luan, Jianli, Gao, Zongwei, Chen, Yang, Tong, Yitian, Liu, Ruixuan, Chong, Su Kong, Wang, Kang L., Zhou, Xiaodong, Shen, Jian, Zhang, Jinsong, Wang, Yayu, Chen, Chui-Zhen, Xie, XinCheng, Feng, Xiao, He, Ke, Xue, Qi-Kun
Rok vydání:	2024
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
Popis:	In this study, we investigate intrinsic magnetic topological insulator MnBi2Te4 thin films grown by molecular beam epitaxy. We observe a reentrant quantum anomalous Hall effect when the Fermi energy enters the valance band and magnetic field equals zero, indicating the emergence of the Chern Anderson insulator state. The discovery opens a new avenue for realizing the QAH effect and underscores the fundamental role of both Berry curvature and Anderson localization. Comment: 15 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2401.11450 Zobrazit plný text záznamu View this record from Arxiv