Journal of Physics: Conference Series 187, 012037 (2009)

Spin-dependent transport in double ferromagnetic-gate graphene structures

Nguyen Viet Hung, A. Bournel, P. Dollfus and Nguyen Van Lien

Based on the non-equilibrium Green’s function method recently developed to solve the quantum relativistic-like Dirac’s equation, spin dependent transport in double ferromagnetic-gate graphene structures has been investigated. The study is focussed on the possibility of controlling the spin polarization and the tunnelling magneto-resistance by the gate voltages. Different from the case of ordinary semiconductors, obtained results show that the transport depends weakly on the well width, but strongly on the confined hole states in the gated regions.