Intertwined Topological and Magnetic Orders in Atomically Thin Chern Insulator MnBi<sub>2</sub>Te<sub>4</sub>
Dmitry Ovchinnikov, Xiong Huang, Zhong Lin, Zaiyao Fei, Jiaqi Cai, Tiancheng Song, Minhao He, Qianni Jiang, Chong Wang, Hao Li, Yayu Wang, Yang Wu, Di Xiao, Jiun-Haw Chu, Jiaqiang Yan, Cui‐Zu Chang, Yong‐Tao Cui, Xiaodong Xu
Abstract
devices. As the magnetic state is tuned through the canted magnetic phase, we observe a band crossing, i.e., the closing and reopening of the bulk band gap, corresponding to the concurrent topological phase transition in both even- and odd-layer-number devices. Our findings shed new light on the interplay between band topology and magnetic order in this newly discovered topological magnet.
Topics & Concepts
Topological insulatorCondensed matter physicsAntiferromagnetismTopology (electrical circuits)van der Waals forceMagnetic fieldInsulator (electricity)Topological orderSpinsBand gapMagnetMaterials sciencePhysicsOptoelectronicsQuantum mechanicsMoleculeMathematicsQuantumCombinatoricsTopological Materials and PhenomenaAdvanced Condensed Matter Physics2D Materials and Applications