Adiabatic quantum pump in a zigzag graphene nanoribbon junction*
Zhang Lin
       
Spin-dependent current I LR σ versus E F in a ZGNR ferromagnetic junction for different magnetization configurations: (a) θ L = θ R = 0 and (b) θ L = 0, θ R = π . The other parameters are set as follows: the on-site potentials of the left, middle, and right ZGNRs are U L = U C = U R = 0.0 eV, the pumping frequency and phase difference are ħω = 0.01 eV and Δ φ = 0, respectively.