Spin transport in a Zigzag normal/ferromagnetic graphene junction
Shi Hao-Sheng†, Grigoryan Vahram L.
       
Schematic illustration of two transport scenario: (a) N = 19-ZGNR, (b) N = 20-AZGNR. The panels from left to right correspond to the band structure for normal ribbon, magnetic ribbon for majority spins, and magnetic ribbon for minority spins. The gray dashed curves result from tight-binding approximation, and the solid red/blue curves are calculated from the Dirac Hamiltonian for continuum approximation. The red and blue denote the parity in bulk states. The green line depicts edge states.