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

S. Nandy, D. A. Pesin

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 t…