Nature of the Dirac gap modulation and surface magnetic interaction in axion antiferromagnetic topological insulator MnBi${}_2$Te${}_4$

A. M. Shikin, D. A. Estyunin, I. I. Klimovskikh +18

Modification of the gap at the Dirac point (DP) in antiferromagnetic (AFM) axion topological insulator MnBi${}_2$Te${}_4$ and its electronic and spin structure has been studied by angl…