Coupled plasmon-phonon mode effects on the Coulomb drag in double-quantum-well systems

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buir.contributor.authorTanatar, Bilal
buir.contributor.orcidTanatar, Bilal|0000-0002-5246-0119
dc.citation.epage7540en_US
dc.citation.issueNumber12en_US
dc.citation.spage7535en_US
dc.citation.volumeNumber56en_US
dc.contributor.authorGüven, K.en_US
dc.contributor.authorTanatar, Bilalen_US
dc.date.accessioned2016-02-08T10:47:34Z
dc.date.available2016-02-08T10:47:34Z
dc.date.issued1997en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe study the Coulomb drag rate for electrons in a double-quantum-well structure taking into account the electron-optical phonon interactions. The full wave vector and frequency dependent random-phase approximation (RPA) at finite temperature is employed to describe the effective interlayer Coulomb interaction. The electron-electron and electron-optical phonon couplings are treated on an equal footing. The electron-phonon mediated interaction contribution is investigated for different layer separations and layer densities. We find that the drag rate at high temperatures (i.e., T≥0.2EF) is dominated by the coupled plasmon-phonon modes of the system. The peak position of the drag rate is shifted to the low temperatures with a slight increase in magnitude, compared to the uncoupled system results in RPA. This behavior is in qualitative agreement with the recent measurements. Including the local-field effects in an approximate way we also estimate the contribution of intralayer correlations.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:47:34Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 1997en
dc.identifier.doi10.1103/PhysRevB.56.7535en_US
dc.identifier.issn0163-1829
dc.identifier.urihttp://hdl.handle.net/11693/25602
dc.language.isoEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttps://doi.org/10.1103/PhysRevB.56.7535en_US
dc.source.titlePhysical Review B - Condensed Matter and Materials Physicsen_US
dc.titleCoupled plasmon-phonon mode effects on the Coulomb drag in double-quantum-well systemsen_US
dc.typeArticleen_US

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