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Large sample-to-sample fluctuations of the nonequilibrium critical current through mesoscopic Josephson junctions.

Research output: Contribution to journalJournal articlepeer-review

Published
<mark>Journal publication date</mark>2001
<mark>Journal</mark>Physical review B
Volume63
Pages (from-to)054512
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We present a theory for the nonequilibrium current in a mesoscopic Josephson junction which is coupled to a normal electron reservoir, and apply it to a chaotic junction. Large sample-to-sample fluctuations of the critical current Ic are found, with rms Ic�sqrt[N]e�/ħ, when the voltage difference eV between the electron reservoir and the junction exceeds the superconducting gap � and the number of modes N connecting the junction to the superconducting electrodes is large.