High-field noise in degenerate and mesoscopic systems
| dc.creator | Green, F. | |
| dc.creator | Das, M. P. | |
| dc.date | 1998-09-25 | |
| dc.date | 1999-06-09 | |
| dc.date.accessioned | 2026-07-07T03:11:35Z | |
| dc.date.available | 2026-07-07T03:11:35Z | |
| dc.description | 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. | |
| dc.description | 25 pp, 4 figs. Small revisions; typos corrected | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9809339 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9809339 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28624 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Materials Science | |
| dc.title | High-field noise in degenerate and mesoscopic systems | |
| dc.type | text |