An effective model of the hexagonal (NiAs-structure) manganese telluride valence band in the vicinity of the $A$ point of the Brillouin zone is derived. It is shown that whereas for the usual antiferromagnetic order (magnetic moments on the basal plane) band splitting at $A$ is small, their out-of-plane rotation enhances the splitting dramatically (to about 0.5 eV). We propose extensions of recent experiments [Phys. Rev. Mater. 6, 014404 (2022)] where such inversion of magnetocrystalline anisotropy has been observed in Li-doped MnTe to confirm this unusual sensitivity of a semiconductor band structure to magnetic order.

• Received 23 September 2022
• Accepted 8 February 2023

DOI:https://doi.org/10.1103/PhysRevB.107.L100417