Adiabatic pumping in a Superconductor-Normal-Superconductor weak link
Mesoscale and Nanoscale Physics
2007-05-23 v2 Superconductivity
Abstract
We present a formalism to study adiabatic pumping through a superconductor - normal - superconductor weak link. At zero temperature, the pumped charge is related to the Berry phase accumulated, in a pumping cycle, by the Andreev bound states. We analyze in detail the case when the normal region is short compared to the superconducting coherence length. The pumped charge turns out to be an even function of the superconducting phase difference. Hence, it can be distinguished from the charge transferred due to the standard Josephson effect.
Cite
@article{arxiv.cond-mat/0506078,
title = {Adiabatic pumping in a Superconductor-Normal-Superconductor weak link},
author = {M. Governale and F. Taddei and F. W. J. Hekking and Rosario Fazio},
journal= {arXiv preprint arXiv:cond-mat/0506078},
year = {2007}
}
Comments
4 pages, 2 figures; Fig. 2 replaced, minor changes in the text