Electron transport and current fluctuations in short coherent conductors
Mesoscale and Nanoscale Physics
2009-11-11 v1
Abstract
Employing a real time effective action formalism we analyze electron transport and current fluctuations in comparatively short coherent conductors in the presence of electron-electron interactions. We demonstrate that, while Coulomb interaction tends to suppress electron transport, it may {\it strongly enhance} shot noise in scatterers with highly transparent conducting channels. This effect of excess noise is governed by the Coulomb gap observed in the current-voltage characteristics of such scatterers. We also analyze the frequency dispersion of higher current cumulants and emphasize a direct relation between electron-electron interaction effects and current fluctuations in disordered mesoscopic conductors.
Cite
@article{arxiv.cond-mat/0503552,
title = {Electron transport and current fluctuations in short coherent conductors},
author = {Dmitri S. Golubev and Artem V. Galaktionov and Andrei D. Zaikin},
journal= {arXiv preprint arXiv:cond-mat/0503552},
year = {2009}
}
Comments
16 pages, 4 figures