Voltage fluctuations on a superconductor grain attached to a quantum wire
Superconductivity
2009-10-31 v3 Mesoscale and Nanoscale Physics
Strongly Correlated Electrons
Quantum Physics
Abstract
When a finite superconductor is in contact with a 1D normal conductor, superconducting phase fluctuations lead to power-law response of the normal subsystem. As a result, the charge fluctuations on the superconductor at zero temperature have logarithmic correlator and a 1/\omega power spectrum (1/f-noise). At higher temperatures 1/\omega is pushed to the high frequency region, and 1/\omega^2 behavior prevails.
Cite
@article{arxiv.cond-mat/9810303,
title = {Voltage fluctuations on a superconductor grain attached to a quantum wire},
author = {Masaki Oshikawa and Alexandre M. Zagoskin},
journal= {arXiv preprint arXiv:cond-mat/9810303},
year = {2009}
}
Comments
5 pages, 3 figures. Figures added