Spin and Charge Currents from Applying a Microwave Field to a Quantum Dot
The evolution operator approach is applied to studying photon-electron pumping effects on a quantum dot connected to two magnetic leads in the presence of both via-dot and over-dot tunneling channels. It is found that a microwave field applied to the quantum dot may give rise to charge and spin pumping at zero bias voltage for asymmetric magnetic junctions.
Yuan Ming Huang
Y. Q. Zhou et al., "Spin and Charge Currents from Applying a Microwave Field to a Quantum Dot", Materials Science Forum, Vols. 663-665, pp. 1337-1340, 2011