Planar Hall effect in antiferromagnetic MnTe thin films

Abstract

We show that the spin-orbit coupling (SOC) in alpha-MnTe impacts the transport behavior by generating an anisotropic valence-band splitting, resulting in four spin-polarized pockets near Gamma. A minimal k-dot-p model is constructed to capture this splitting by group theory analysis, a tight-binding model and ab initio calculations. The model is shown to describe the rotation symmetry of the zero-field planer Hall effect (PHE). The upper limit of the PHE percentage is shown to be fundamentally determined by the band shape, and is quantitatively estimated to be roughly 31% by first principles.

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• Temperature Dependence of Relativistic Valence Band Splitting Induced by an Altermagnetic Phase Transition
• Sensitivity of the MnTe valence band to orientation of magnetic moments
• Antiferromagnetic $\alpha$-MnTe: Molten-Salt-Assisted Chemical Vapor Deposition Growth and Magneto-Transport Properties
• Antiferromagnetism, spin splitting, and spin-orbit interaction in MnTe
• Quantum nonlinear planar Hall effect in bilayer graphene: an orbital effect of a steady in-plane magnetic field
• First-principles methodology for studying magnetotransport in narrow-gap semiconductors: an application to Zirconium Pentatelluride ZrTe5
• Double-Exchange Enhanced Magnetic Blue-Shift of Mott Gaps
• Dominant orbital magnetization in the prototypical altermagnet MnTe
• Buffer-layer-controlled Nickeline vs Zinc-Blende/Wurtzite-type MnTe growths on c-plane Al2O3 substrates
• Switchable in-plane anomalous Hall effect by magnetization orientation in monolayer ${\mathrm{Mn}}_3{\mathrm{Si}}_2{\mathrm{Te}}_6$
• Quantum oscillations of the nonlinear planar effects signifying chiral anomaly in Weyl Semimetals
• Planar Hall effect from superconducting fluctuations
• Abnormal planar Hall effect and disentanglement of incoherent and coherent transport in a Kondo lattice
• Exploiting the violation of Lorentz symmetry for the planar Hall effect
• Standard model of electromagnetism and chirality in crystals
• Proximity Magnetism in Mn(Bi,Sb)2Te4-(Bi,Sb)2Te3/MnTe Natural Heterostructures