Pumped current and voltage for an adiabatic quantum pump

Abstract

We consider adiabatic pumping of electrons through a quantum dot. There are two ways to operate the pump: to create a dc current $\bar{I}$ or to create a dc voltage $\bar{V}$. We demonstrate that, for very slow pumping, $\bar{I}$ and $\bar{V}$ are not simply related via the dc conductance $G$ as $\bar{I}=\bar{V}G$. For the case of a chaotic quantum dot, we consider the statistical distribution of $\bar{V}G-\bar{I}$. Results are presented for the limiting cases of a dot with single channel and with multichannel point contacts.

6 pages, 4 figures

References in corpus (2)

• The Statistical Theory of Quantum Dots
• Rectification of displacement currents in an adiabatic electron pump

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