Quantum Transport Simulations for Twisted Bilayer MoS2 and Spin-Orbit-Proximitized Graphene

Abstract
In this talk, I would like to share some of the latest works of my research group: Quantum transport in twisted bilayer MoS2 [1] and graphene proximitized by WSe2 with a strong spin-orbit coupling [2, 3]. In the former, we considered two MoS2 layers twisted from each other by approximately 1 degree, resulting in a moir´e potential that can be electrically tuned between hexagonal and honeycomb superlattices, leading to distinct transport behaviors. The latter was initiated from our previous theoretical work in collaboration with an experimental group working on transport in graphene/WSe2 van der Waals stacks [2], revealing a strong spin-orbit coupling strength in graphene exceeding 10 meV. In [3], we further investigated the effect of the radial Rashba spin-orbit coupling that was recently predicted to emerge in graphene/WSe2 with certain special twist angles. Before showing these results, the Landauer-B¨uttiker formalism and real-space Green’s function method will be briefly introduced.