Nonlinear voltage dependence of shot noise
Condensed Matter
2009-10-31 v1
Abstract
The current noise in a multi-probe mesoscopic conductor can have a nonlinear dependence on the strength of driving bias voltage. This paper presents a theoretical formulation for the nonlinear noise spectra. We pay special attention to maintain gauge invariance at the nonlinear level. At small but finite voltages, explicit expressions for nonlinear noise spectra, expanded order by order in the bias, have been derived. In the wideband limit, a closed form solution of the noise spectra for finite voltages is obtained.
Cite
@article{arxiv.cond-mat/9902306,
title = {Nonlinear voltage dependence of shot noise},
author = {Yadong Wei and Baigeng Wang and Jian Wang and Hong Guo},
journal= {arXiv preprint arXiv:cond-mat/9902306},
year = {2009}
}