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dc.contributor.authorAsgari, R.en_US
dc.contributor.authorDavoudi, B.en_US
dc.contributor.authorTanatar, B.en_US
dc.date.accessioned2016-02-08T10:27:17Z
dc.date.available2016-02-08T10:27:17Z
dc.date.issued2004en_US
dc.identifier.issn0038-1098
dc.identifier.urihttp://hdl.handle.net/11693/24300
dc.description.abstractRecent experiments on two-dimensional (2D) electron systems have found a sharp increase in the effective mass of electrons with decreasing electron density. In an effort to understand this behavior we employ the many-body theory to calculate the quasiparticle effective mass in 2D electron systems. Because the low density regime is explored in the experiments we use the GWγ approximation where the vertex correction γ describes the correlation effects to calculate the self-energy from which the effective mass is obtained. We find that the quasiparticle effective mass shows a sharp increase with decreasing electron density. Disorder effects due to charged impurity scattering plays a crucial role in density dependence of effective mass.en_US
dc.language.isoEnglishen_US
dc.source.titleSolid State Communicationsen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.ssc.2004.01.018en_US
dc.subjectD. Electron gasen_US
dc.subjectD. Many-body effective massen_US
dc.subjectApproximation theoryen_US
dc.subjectCarrier concentrationen_US
dc.subjectElectron gasen_US
dc.subjectFermi levelen_US
dc.subjectGreen's functionen_US
dc.subjectPermittivityen_US
dc.subjectPolarizationen_US
dc.subjectScatteringen_US
dc.subjectSemiconductor materialsen_US
dc.subjectSemiconductor quantum wellsen_US
dc.subjectSpectrum analysisen_US
dc.subjectElectron systemsen_US
dc.subjectMany-body effective massen_US
dc.subjectSolid state physicsen_US
dc.titleEffective mass enhancement in two-dimensional electron systems: The role of interaction and disorder effectsen_US
dc.typeArticleen_US
dc.departmentDepartment of Physics
dc.citation.spage13en_US
dc.citation.epage17en_US
dc.citation.volumeNumber130en_US
dc.citation.issueNumber1-2en_US
dc.identifier.doi10.1016/j.ssc.2004.01.018en_US
dc.publisherElsevieren_US
dc.identifier.eissn1879-2766


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