Valley splitting and magnetic anisotropy in two-dimensional VI/MSe (M = W, Mo) heterostructures.

As a new van der Waals ferromagnetic material, VI can be used to lift the valley degeneracy of transition metal dichalcogenides at the ' and points. Here, the electronic structure and magnetic anisotropy of the VI/MSe (M = W, Mo) heterostructures are studied. The VI/WSe heterostructure is semiconducting with a band gap of 0.