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http://hdl.handle.net/2445/10877
Title: | Shot-noise suppression by Fermi and Coulomb correlations in ballistic conductors |
Author: | Bulashenko, Oleg Rubí Capaceti, José Miguel |
Keywords: | Estructura electrònica Propietats elèctriques Superfícies (Física) Electronic structure Surfaces (Physics) Electric properties |
Issue Date: | 2001 |
Publisher: | The American Physical Society |
Abstract: | We investigate the injection of degenerate Fermi-Dirac electrons into a multimode ballistic conductor under the space-charge limited regime. The nonequilibrium current fluctuations were found to be suppressed by both Coulomb and Fermi correlations. We show that the Fermi shot-noise suppression factor is limited below by the value 2kT/epsilon_F, where T is the temperature and epsilon_F the Fermi energy of the injected electrons. The Coulomb noise suppression factor may attain much lower values epsilon_F/2qU, because of its dependence on the applied bias U >> kT/q. The asymptotic behaviour of the overall shot-noise suppression factor in a high degenerate limit was found to be kT/qU, independently of the material parameters. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.64.045307 |
It is part of: | Physical Review B, 2001, vol. 64, núm. 4, p. 45307- |
URI: | http://hdl.handle.net/2445/10877 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.64.045307 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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