▎ 摘　　要

We investigate spin dependent transport in monolayer graphene with a spatial modulation of the Rashba spin orbit interaction (RSOI). In this structure, spin polarized current can be generated with spin polarization being a sensitive oscillatory function of the Fermi energy. Rapid reversal of the spin polarization can be realized at some Fermi energies by slight changes in the Fermi energy. The magnitude of the spin polarization depends on the number of RSOI barriers. The switching of the spin polarization in graphene using a Rashba multi-barrier structure is very useful for potential applications in graphene spintronic devices. (C) 2013 AIP Publishing LLC