Defect-induced displacement of topological surface state in quantum magnet MnBi${}_2$Te${}_4$

Felix Lüpke, Marek Kolmer, Hengxin Tan +6

The topological magnet MnBi${}_2$Te${}_4$ (MBT), with gapped topological surface state, is an attractive platform for realizing quantum anomalous Hall and Axion insulator states. Howev…