▎ 摘　　要

The effect of a curvature in a graphene with a spin-orbit interaction (SOI) is studied using a realistic pi and sigma orbital tight-binding (TB) model. The coupling of the atomic SOI and the curvature-induced orbital mixing produces an effective Rashba-type SOI and causes the k-dependent energy splitting in the low-energy electronic structure near the K point. We find that the spin Hall effect (SHE) is enhanced by the curvature effect. An effective pi orbital model, which includes the SOI and curvature effects perturbatively, is also discussed. (C) 2009 Elsevier B.V. All rights reserved.