Intrinsic and Rashba spin-orbit interactions in graphene sheets
Intrinsic and Rashba spin-orbit interactions in graphene sheets
Starting from a microscopic tight-binding model and using second order perturbation theory, we derive explicit expressions for the intrinsic and Rashba spin-orbit interaction induced gaps in the Dirac-like low-energy band structure of an isolated graphene sheet. The Rashba interaction parameter is first order in the atomic carbon spin-orbit coupling strength …