The Spin Electron Moves on Line Defect in Honeycomb Structure

Recently, two-dimensional honeycomb lattice such as silicene, geremanen and graphene [1] have enormous application potential. They have different intrinsic spin-orbital interaction. For example, graphene has extreme low intrinsic spin-orbital interaction so graphene has long spin diffusion lengths at room temperatures. And the other hand, the electron transports along the line defect in graphene system. Hence we focus on the spin separated and propagation along the line defects by inducing spin orbital coupling controlling by the gate voltage.