Adiabatic pumping in a Superconductor-Normal-Superconductor weak link

Details Adiabatic pumping in a Superconductor-Normal-Superconductor weak link Adiabatic pumping in a Superconductor-Normal-Superconductor weak link

2005-06-03

arxiv.org/abs/cond-mat/0506078v2

Phys. Rev. Lett. 95, 256801 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures; Fig. 2 replaced, minor changes in the text

Scientific paper

10.1103/PhysRevLett.95.256801

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.

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