Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors

We predict the existence of an anomalous crossover between thermal and shot noise in macroscopic diffusive conductors. We first show that, besides thermal noise, these systems may also exhibit shot noise due to fluctuations of the total number of carriers in the system. Then we show that at increasi...

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Detalles Bibliográficos
Autores: Gomila Lluch, Gabriel, Reggiani, L. (Lino), 1941-
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2000
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/10600
Acceso en línea:https://hdl.handle.net/2445/10600
Access Level:acceso abierto
Palabra clave:Soroll electrònic
Fluctuations (Physics)
Semiconductors
Electronic noise
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spelling Anomalous crossover between thermal and shot noise in macroscopic diffusive conductorsGomila Lluch, GabrielReggiani, L. (Lino), 1941-Soroll electrònicFluctuations (Physics)SemiconductorsElectronic noiseFluctuations (Physics)SemiconductorsWe predict the existence of an anomalous crossover between thermal and shot noise in macroscopic diffusive conductors. We first show that, besides thermal noise, these systems may also exhibit shot noise due to fluctuations of the total number of carriers in the system. Then we show that at increasing currents the crossover between the two noise behaviors is anomalous, in the sense that the low-frequency current spectral density displays a region with a superlinear dependence on the current up to a cubic law. The anomaly is due to the nontrivial coupling in the presence of the long-range Coulomb interaction among the three time scales relevant to the phenomenon, namely, diffusion, transit, and dielectric relaxation time.The American Physical Society200920092000info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion4 p.application/pdfhttps://hdl.handle.net/2445/10600Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.62.8068Physical Review B, 2000, vol. 62, núm. 12, p. 8068-8071http://dx.doi.org/10.1103/PhysRevB.62.8068(c) The American Physical Society, 2000info:eu-repo/semantics/openAccessoai:recercat.cat:2445/106002026-05-29T05:05:01Z
dc.title.none.fl_str_mv Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
title Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
spellingShingle Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
Gomila Lluch, Gabriel
Soroll electrònic
Fluctuations (Physics)
Semiconductors
Electronic noise
Fluctuations (Physics)
Semiconductors
title_short Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
title_full Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
title_fullStr Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
title_full_unstemmed Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
title_sort Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
dc.creator.none.fl_str_mv Gomila Lluch, Gabriel
Reggiani, L. (Lino), 1941-
author Gomila Lluch, Gabriel
author_facet Gomila Lluch, Gabriel
Reggiani, L. (Lino), 1941-
author_role author
author2 Reggiani, L. (Lino), 1941-
author2_role author
dc.subject.none.fl_str_mv Soroll electrònic
Fluctuations (Physics)
Semiconductors
Electronic noise
Fluctuations (Physics)
Semiconductors
topic Soroll electrònic
Fluctuations (Physics)
Semiconductors
Electronic noise
Fluctuations (Physics)
Semiconductors
description We predict the existence of an anomalous crossover between thermal and shot noise in macroscopic diffusive conductors. We first show that, besides thermal noise, these systems may also exhibit shot noise due to fluctuations of the total number of carriers in the system. Then we show that at increasing currents the crossover between the two noise behaviors is anomalous, in the sense that the low-frequency current spectral density displays a region with a superlinear dependence on the current up to a cubic law. The anomaly is due to the nontrivial coupling in the presence of the long-range Coulomb interaction among the three time scales relevant to the phenomenon, namely, diffusion, transit, and dielectric relaxation time.
publishDate 2000
dc.date.none.fl_str_mv 2000
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/10600
url https://hdl.handle.net/2445/10600
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.62.8068
Physical Review B, 2000, vol. 62, núm. 12, p. 8068-8071
http://dx.doi.org/10.1103/PhysRevB.62.8068
dc.rights.none.fl_str_mv (c) The American Physical Society, 2000
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The American Physical Society, 2000
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 4 p.
application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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