Evolution of the Electronic Structure of Ultrathin MnBi<sub>2</sub>Te<sub>4</sub> Films
Evolution of the Electronic Structure of Ultrathin MnBi<sub>2</sub>Te<sub>4</sub> Films
Ultrathin films of intrinsic magnetic topological insulator MnBi2Te4 exhibit fascinating quantum properties such as the quantum anomalous Hall effect and the axion insulator state. In this work, we systematically investigate the evolution of the electronic structure of MnBi2Te4 thin films. With increasing film thickness, the electronic structure changes from an …