High-field noise in degenerate and mesoscopic systems

Details High-field noise in degenerate and mesoscopic systems High-field noise in degenerate and mesoscopic systems

1998-09-25

arxiv.org/abs/cond-mat/9809339v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

25 pp, 4 figs. Small revisions; typos corrected

Scientific paper

We analyse high-field current fluctuations in metallic systems by direct mapping of the Fermi-liquid correlations to the semiclassical nonequilibrium state. We give three applications. First, for bulk conductors, we show that there is a unique nonequilibrium analogue to the fluctuation-dissipation theorem for thermal noise. With it, we calculate suppression of the excess hot-electron term by Pauli exclusion. Second, in the degenerate regime, we argue that shot noise and thermal noise are incommensurate. They cannot be connected by a smooth, universal interpolation formula. This follows from their contrasting responses to Coulomb screening. We propose an experiment to test this mismatch. Third, we carry out an exact model calculation of high-field shot noise in narrow mesoscopic wires. We show that a distinctive mode of suppression arises from the structure of the semiclassical Boltzmann equation in two and three dimensions. In one dimension such a mode does not exist.

Affiliated with

Also associated with

No associations

Rating

High-field noise in degenerate and mesoscopic systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with High-field noise in degenerate and mesoscopic systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-field noise in degenerate and mesoscopic systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-670352