Universal gap fluctuations in the superconductor proximity effect
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
Random-matrix theory is used to study the mesoscopic fluctuations of the excitation gap in a metal grain or quantum dot induced by the proximity to a superconductor. We propose that the probability distribution of the gap is a universal function in rescaled units. Our analytical prediction for the gap distribution agrees well with exact diagonalization of a model Hamiltonian.
Cite
@article{arxiv.cond-mat/0006375,
title = {Universal gap fluctuations in the superconductor proximity effect},
author = {M. G. Vavilov and P. W. Brouwer and V. Ambegaokar and C. W. J. Beenakker},
journal= {arXiv preprint arXiv:cond-mat/0006375},
year = {2007}
}