Magnetoelectric tuning of spin, valley, and layer-resolved anomalous Nernst effect in transition-metal dichalcogenides bilayers

The anomalous Nernst coefficient (ANC) for transition-metal dichalcogenide (TMD) bilayers is studied with a focus on the interplay between layer pseudospin, spin, and valley degrees of freedom when electric and exchange fields are present. Breaking the inversion and time reversal symmetries via respectively electric and exchange fields results for bilayer TMDs in a spin-valley-layer polarized total ANC. Conditions are determined for controlling the spin, valley, and layer-resolved contributions via electric field tuning. Our results demonstrate the control of layer degree of freedom in bilayer TMDs magnetoelectrically which is of relevance for possible applications in spin/valley caloritronics.

Automated summary

The interplay between layer pseudospin, spin, and valley degrees of freedom in transition-metal dichalcogenide (TMD) bilayers with electric and exchange fields is studied, resulting in a spin-valley-layer polarized total anomalous Nernst coefficient. The control of spin, valley, and layer-resolved contributions in bilayer TMDs via electric field tuning is determined. This control of layer degree of freedom in bilayer TMDs magnetoelectrically has relevance for possible applications in spin/valley caloritronics.