Conductance Fluctuations in a Metallic Wire Interrupted by a Tunnel Junction
Mesoscale and Nanoscale Physics
2009-10-30 v1
Abstract
The conductance fluctuations of a metallic wire which is interrupted by a small tunnel junction has been explored experimentally. In this system, the bias voltage V, which drops almost completely inside the tunnel barrier, is used to probe the energy dependence of conductance fluctuations due to disorder in the wire. We find that the variance of the fluctuations is directly proportional to V. The experimental data are consistently described by a theoretical model with two phenomenological parameters: the phase breaking time at low temperatures and the diffusion coefficient.
Keywords
Cite
@article{arxiv.cond-mat/9704113,
title = {Conductance Fluctuations in a Metallic Wire Interrupted by a Tunnel Junction},
author = {Alexander van Oudenaarden and M. H. Devoret and E. H. Visscher and Yu. V. Nazarov and J. E. Mooij},
journal= {arXiv preprint arXiv:cond-mat/9704113},
year = {2009}
}
Comments
9 pages RevTeX and 4 PS figures (accepted for publication in Physical Review Letters)