Low-energy effective theory and anomalous Hall effect in monolayer ${\mathrm{WTe}}_2$

Abstract

We develop a symmetry-based low-energy theory for monolayer ${\mathrm{WTe}}_2$ in its 1T${}^{\prime }$ phase, which includes eight bands (four orbitals, two spins). This model reduces to the conventional four-band spin-degenerate Dirac model near the Dirac points of the material. We show that measurements of the spin susceptibility, and of the magnitude and time dependence of the anomalous Hall conductivity induced by injected or equilibrium spin polarization can be used to determine the magnitude and form of the spin-orbit coupling Hamiltonian, as well as the dimensionless tilt of the Dirac bands.

11 pages, 4 figures, Submission to SciPost

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Cited by in corpus (5)

• 2024 roadmap on 2D topological insulators
• Hyperbolic plasmons in massive tilted 2D Dirac materials
• Theory of Glide Symmetry Protected Helical Edge States in WTe${}_2$ Monolayer
• Second Harmonic Helicity and Faraday Rotation in Gated Single-Layer 1T${}^{\prime }$-WTe${}_2$
• Thermal difference reflectivity of tilted 2D Dirac materials