Why does a metal-superconductor junction have a resistance?
Mesoscale and Nanoscale Physics
2013-04-08 v2
Abstract
This is a tutorial article based on a lecture delivered in June 1999 at the NATO Advanced Study Institute in Ankara. The phenomenon of Andreev reflection is introduced as the electronic analogue of optical phase-conjugation. In the optical problem, a disordered medium backed by a phase-conjugating mirror can become completely transparent. Yet, a disordered metal connected to a superconductor has the same resistance as in the normal state. The resolution of this paradox teaches us a fundamental difference between phase conjugation of light and electrons.
Keywords
Cite
@article{arxiv.cond-mat/9909293,
title = {Why does a metal-superconductor junction have a resistance?},
author = {C. W. J. Beenakker},
journal= {arXiv preprint arXiv:cond-mat/9909293},
year = {2013}
}
Comments
12 pages, 5 postscript figures [v2: all figures inline]