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Título:
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Shot-noise suppression by Fermi and Coulomb correlations in ballistic conductors
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Autor/a:
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Bulashenko, Oleg; Rubí Capaceti, José Miguel
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Otros autores:
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Universitat de Barcelona |
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Abstract:
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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. |
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Materia(s):
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-Estructura electrònica
-Propietats elèctriques
-Superfícies (Física)
-Electronic structure
-Surfaces (Physics)
-Electric properties |
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Derechos:
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(c) The American Physical Society, 2001
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Tipo de documento:
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Artículo
Artículo - Versión publicada |
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Editor:
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The American Physical Society
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Compartir:
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