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Mesoscopic effects in adiabatic spin pumping

Prashant Sharma·Piet W. Brouwer
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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.

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Prashant Sharma, Piet W. Brouwer. 2004-02-19. Mesoscopic effects in adiabatic spin pumping. https://doi.org/10.1103/physrevlett.91.166801

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