Sensitivity of the MnTe valence band to the orientation of magnetic moments
Paulo E. Faria, Koen A. de Mare, Klaus Zollner, Kyo‐Hoon Ahn, Sigurður I. Erlingsson, Mark van Schilfgaarde, Karel Výborný
Abstract
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.
Topics & Concepts
Condensed matter physicsBrillouin zoneAntiferromagnetismMagnetic momentElectronic band structureBasal planeMagnetocrystalline anisotropyMaterials scienceMagnetic anisotropyPhysicsMagnetic fieldMagnetizationQuantum mechanicsMagnetic and transport properties of perovskites and related materialsMultiferroics and related materials2D Materials and Applications