Mesoscopic effects in adiabatic spin pumping

Abstract

We show that temporal shape modulations (pumping) of a quantum dot in the presence of spin-orbital coupling lead to a finite dc spin current. Depending on the strength of the spin-orbit coupling, the spin current is polarized perpendicular to the plane of the two-dimensional electron gas, or has an arbitrary direction subject to mesoscopic fluctuations. We analyze the statistics of the spin and charge currents in the adiabatic limit for the full cross-over from weak to strong spin-orbit coupling.

4 pages, 1 figure same as version 1. Added a comma to separate the two author names

References in corpus (1)

• Adiabatic spin pumping through a quantum dot with a single orbital level

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