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arXiv · 0904.1687

Non-adiabatic pumping through interacting quantum dots

Fabio Cavaliere·Michele Governale·Jürgen König
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Abstract

We study non-adiabatic two-parameter charge and spin pumping through a single-level quantum dot with Coulomb interaction. For the limit of weak tunnel coupling and in the regime of pumping frequencies up to the tunneling rates, $\Omega \lesssim \Gamma/\hbar$, we perform an exact resummation of contributions of all orders in the pumping frequency. As striking non-adiabatic signatures, we find frequency-dependent phase shifts in the charge and spin currents, which allow for an effective single-parameter pumping as well as pure spin without charge currents.

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Fabio Cavaliere, Michele Governale, Jürgen König. 2009-04-10. Non-adiabatic pumping through interacting quantum dots. https://doi.org/10.1103/physrevlett.103.136801

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