Magnetic-Field-Induced Stabilization of Non-Equilibrium Superconductivity
Superconductivity
2011-08-09 v1 Mesoscale and Nanoscale Physics
Abstract
A small magnetic field is found to enhance relaxation processes in a superconductor thus stabilizing superconductivity in non-equilibrium conditions. In a normal-metal (N) - insulator - superconductor (S) tunnel junction, applying a field of the order of 100 \mu T leads to significantly improved cooling of the N island by quasiparticle (QP) tunneling. These findings are attributed to faster QP relaxation within the S electrodes as a result of enhanced QP drain through regions with locally suppressed energy gap due to magnetic vortices in the S leads at some distance from the junction.
Keywords
Cite
@article{arxiv.1108.1544,
title = {Magnetic-Field-Induced Stabilization of Non-Equilibrium Superconductivity},
author = {J. T. Peltonen and J. T. Muhonen and M. Meschke and N. B. Kopnin and J. P. Pekola},
journal= {arXiv preprint arXiv:1108.1544},
year = {2011}
}
Comments
4 pages, 3 figures