Doubled Shot Noise In Disordered Normal-Metal-Superconductor Junctions
Condensed Matter
2007-05-23 v1
Abstract
The low-frequency shot-noise power of a normal-metal-superconductor junction is studied for arbitrary normal region. Through a scattering approach, a formula is derived which expresses the shot-noise power in terms of the transmission eigenvalues of the normal region. The noise power divided by the current is enhanced by a factor two with respect to its normal-state value, due to Cooper-pair transport in the superconductor. For a disordered normal region, it is still smaller than the Poisson noise, as a consequence of noiseless open scattering channels.
Cite
@article{arxiv.cond-mat/9403050,
title = {Doubled Shot Noise In Disordered Normal-Metal-Superconductor Junctions},
author = {M. J. M. de Jong and C. W. J. Beenakker},
journal= {arXiv preprint arXiv:cond-mat/9403050},
year = {2007}
}
Comments
4 pages, RevTeX v3.0, including 1 figure, Submitted to Physical Review B