In this paper we study the effect of a Zeeman field on the supercurrent of a mesoscopic SNS junction. It is shown that the supercurrent suppression is due to a redistribution of current-carrying states in energy space. A dramatic consequence is that (part of the) the suppressed supercurrent can be recovered with a suitable non-equilibrium distribution of quasiparticles.
@article{arxiv.cond-mat/0002395,
title = {Magnetic Field Effect on the Supercurrent of an SNS junction},
author = {S. -K. Yip},
journal= {arXiv preprint arXiv:cond-mat/0002395},
year = {2009}
}