Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/211
DC FieldValueLanguage
dc.contributor.authorRaimondi, Roberto-
dc.contributor.authorSchwab, Peter-
dc.contributor.authorCastellani, Claudio-
dc.date.accessioned2009-02-07T17:27:10Z-
dc.date.available2009-02-07T17:27:10Z-
dc.date.issued1999-
dc.identifier.citation33en
dc.identifier.issn1550-235x-
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/2307/211-
dc.description.abstractThe calculation of the dephasing time in electron systems is presented. By means of the Keldysh formalism, we discuss in a unifying way both weak localization and interaction effects in disordered systems. This allows us to show how dephasing arises both in the particle-particle channel (weak localization) and in the particle-hole channel (interaction effect). First we discuss dephasing by an external field. Besides reviewing previous work on how an external oscillating field suppresses the weak localization correction, we derive a new expression for the effect of a field on the interaction correction. We find that the latter may be suppressed by a static electric field, in contrast to weak localization. We then consider dephasing due to inelastic scattering. The ambiguities involved in the definition of the dephasing time are clarified by directly comparing the diagrammatic approach with the path-integral approach. We show that different dephasing times appear in the particle-particle and particle-hole channels. Finally we comment on recent experiments.en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.relation.ispartofPhysical Review Ben
dc.subjectdephasingen
dc.subjectdisordered elecron systemsen
dc.subjectquantum interaction correctionsen
dc.subjectnon-linear effectsen
dc.subjectweak localizationen
dc.titleNonlinear effects and dephasing in disordered electron systemsen
dc.typeArticleen
dc.subject.miurSettori Disciplinari MIUR::Scienze fisiche::FISICA TEORICA, MODELLI E METODI MATEMATICIen
dc.subject.isicruiCategorie ISI-CRUI::Scienze fisiche::Applied Physics/Condensed Matter/Materials Scienceen
dc.subject.anagraferoma3Scienze fisicheen
dc.relation.volumenumber60en
dc.relation.pagenumber5818 - 5831en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.60.5818-
dc.identifier.doi10.1103/PhysRevB.60.5818-
item.languageiso639-1other-
item.fulltextWith Fulltext-
item.grantfulltextrestricted-
Appears in Collections:A - Articolo su rivista
X_Dipartimento di Fisica 'Edoardo Amaldi'
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