Band-gap renormalization in quantum wire systems: dynamical correlations and multi-subband effects

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buir.contributor.authorTanatar, Bilal
buir.contributor.orcidTanatar, Bilal|0000-0002-5246-0119
dc.citation.epage2042en_US
dc.citation.issueNumber9en_US
dc.citation.spage2031en_US
dc.citation.volumeNumber12en_US
dc.contributor.authorGüven, K.en_US
dc.contributor.authorTanatar, Bilalen_US
dc.contributor.authorBennett, C. R.en_US
dc.date.accessioned2016-02-08T10:36:36Z
dc.date.available2016-02-08T10:36:36Z
dc.date.issued2000en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe study the band-gap renormalization m a model semiconductor quantum wire due to the exchange-correlation effects among the charge carriers. We construct a two-subband model for the quantum wire, and employ the GW-approximation to obtain the renormalized quasi-particle energies at the optical band edge. The renormalization is calculated as a function of electron-hole plasma density and the wire radius. Our results show that the very presence of the second subband affects the renormalization process even in the absence of occupation by the carriers. We compare the fully dynamical random-phase approximation results to the quasi-static case in order to emphasize the dynamical correlation effects. Effects of electron-phonon interaction within the two-subband model are also considered.en_US
dc.identifier.doi10.1088/0953-8984/12/9/307en_US
dc.identifier.issn0953-8984
dc.identifier.urihttp://hdl.handle.net/11693/24948
dc.language.isoEnglishen_US
dc.publisherInstitute of Physics Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0953-8984/12/9/307en_US
dc.source.titleJournal of Physics Condensed Matteren_US
dc.titleBand-gap renormalization in quantum wire systems: dynamical correlations and multi-subband effectsen_US
dc.typeArticleen_US

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