Pumped current and voltage for an adiabatic quantum pump

Details Pumped current and voltage for an adiabatic quantum pump Pumped current and voltage for an adiabatic quantum pump

2001-02-08

arxiv.org/abs/cond-mat/0102159v1

Phys. Rev. B 64, 075304 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures

Scientific paper

10.1103/PhysRevB.64.075304

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.

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