Self-consistent theory of current and voltage noise in multimode ballistic conductors
Abstract
Electron transport in a self-consistent potential along a ballistic two-terminal conductor has been investigated. We have derived general formulas which describe the nonlinear current-voltage characteristics, differential conductance, and low-frequency current and voltage noise assuming an arbitrary distribution function and correlation properties of injected electrons. The analytical results have been obtained for a wide range of biases: from equilibrium to high values beyond the linear-response regime. The particular case of a three-dimensional Fermi-Dirac injection has been analyzed. We show that the Coulomb correlations are manifested in the negative excess voltage noise, i.e., the voltage fluctuations under high-field transport conditions can be less than in equilibrium.
Cite
@article{arxiv.cond-mat/0201191,
title = {Self-consistent theory of current and voltage noise in multimode ballistic conductors},
author = {O. M. Bulashenko and J. M. Rubi},
journal= {arXiv preprint arXiv:cond-mat/0201191},
year = {2007}
}
Comments
16 pages, 10 figs; minor corrections