Scientists at Tokyo Institute of Technology shed light on the relationship between the magnetic properties of topological insulators and their electronic band structure. Their experimental results ...

Caption (a) Schematic crystal structure of MnBi2Te4. The red and blue arrows denote magnetic moments of Mn atoms. (b) High-Chern-number (C=2) Chern insulator state in 10-SL MnBi2Te4 device.

The Harvard research team investigated whether a similar effect could be achieved in a centrosymmetric crystal, specifically the antiferromagnetic topological insulator MnBi2Te4. [caption id ...