Native point defects and their implications for the Dirac point gap at MnBi${}_2$Te${}_4$(0001)

M. Garnica, M. M. Otrokov, P. Casado Aguilar +13

The Dirac point gap at the surface of the antiferromagnetic topological insulator MnBi${}_2$Te${}_4$ is a highly debated issue. While the early photoemission measurements reported on l…