Tunable Berry curvature and valley and spin Hall effect in bilayer MoS2

The Valley Hall Effect in MoS2 Transistors

Valley Hall effect in disordered monolayer MoS2 from first principles

Spin Hall effect and Berry phase of spinning particles

Band topology and quantum spin Hall effect in bilayer graphene

We consider bilayer graphene in the presence of spin orbit coupling, to assess its behavior as a topological insulator. The first Chern number n for the energy bands of single and bilayer graphene is computed and compared. It is shown that for a given valley and spin, n in a bilayer is doubled with respect to the monolayer. This implies that bilayer graphene will have twice as many edge states ...

Photoinduced quantum spin and valley Hall effects, and orbital magnetization in monolayer MoS2

We theoretically demonstrate that 100% valley-polarized transport in monolayers of MoS2 and other group-VI dichalcogenides can be obtained using off-resonant circularly polarized light. By tuning the intensity of the off-resonant light the intrinsic band gap in one valley is reduced, while it is enhanced in the other valley, enabling single valley quantum transport. As a consequence, we predict...