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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
It is part of: Physical Review B, 2001, vol. 64, núm. 4, p. 45307-
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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