Antiferromagnetism, spin splitting, and spin-orbit interaction in MnTe

Abstract

Hexagonal MnTe emerges as a critical component in designing magnetic quantum heterostructures, calling for a detailed study. After finding a suitable combination of exchange-correlation functional and corrections, our study within {\em ab initio} density functional theory uncovers an insulating state with a preferred antiferromagnetic order. We compute the exchange interaction strengths to estimate the antiferromagnetic ordering temperature via Monte Carlo calculations. Our calculations and symmetry analysis reveal a large spin splitting in the system due to the antiferromagnetic order without considering spin-orbit interaction, except in the $k_x$-$k_y$ plane. Critically examining the band dispersion and spin textures obtained from our calculations and comparing them with an insightful symmetry analysis and analytical model, we confirm a combined Rashba-Dresselhaus interaction in the $k_x$-$k_y$ plane, around the K point of the system. Finally, we find ferroelectricity in the system for a higher energy magnetic configuration. Our results and insights would help design heterostructures of MnTe for technological applications.

10 pages, 6 figures

References in corpus (10)

• Emergence of the persistent spin helix in semiconductor quantum wells
• Observation of spin splitting torque in a collinear antiferromagnet RuO2
• Observation of spin-splitter torque in collinear antiferromagnetic RuO${}_2$
• Tuning ferromagnetism at interfaces between insulating perovskite oxides
• Magnetoelectric properties of the multiferroic CuCrO${}_2$ studied by means of ab initio calculations and Monte Carlo simulations
• Itinerant Ferromagnetism in p-doped Monolayers of MoS2
• Perovskite oxide heterojunction for Rashba-Dresselhaus assisted antiferromagnetic spintronics
• DFT study of itinerant ferromagnetism in $p$-doped monolayers of MoS${}_2$
• Rashba-like spin-orbit interaction and spin texture at the KTaO${}_{\text{3}}$ (001) surface from DFT calculations
• Electronic and magnetic properties of low dimensional system Co2TeO3Cl2

Cited by in corpus (7)

• Observation of Giant Band Splitting in Altermagnetic MnTe
• Giant strain-induced spin splitting effect in MnTe, a $g$-wave altermagnetic semiconductor
• Interplay of altermagnetism and pressure in hexagonal and orthorhombic MnTe
• Altermagnetism in orthorhombic $Pnma$ structure through group theory and DFT calculations
• Origin of $A$-type antiferromagnetism and chiral split magnons in altermagnetic $\alpha$-MnTe
• Unlocking Doping Effects on Altermagnetism in MnTe: Emergence of Quasi-altermagnetism
• Proximity-induced Rashba spin-orbit interaction in BaMnO${}_{\text{3}}|$KTaO${}_{\text{3}}$ heterostructure for antiferromagnetic spintronics