Collective excitations of strongly coupled bilayer charged Bose liquids in the third-frequency-moment sum rule

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buir.contributor.authorTanatar, Bilal
buir.contributor.orcidTanatar, Bilal|0000-0002-5246-0119
dc.citation.epage115324-6en_US
dc.citation.issueNumber11en_US
dc.citation.spage115324-1en_US
dc.citation.volumeNumber78en_US
dc.contributor.authorTas, M.en_US
dc.contributor.authorTanatar, Bilalen_US
dc.date.accessioned2016-02-08T10:07:40Z
dc.date.available2016-02-08T10:07:40Z
dc.date.issued2008en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe calculate the collective excitation modes of strongly coupled bilayer charged Bose systems. We employ the dielectric matrix formulation to study the correlation effects within the random-phase approximation (RPA), the self consistent field approximation Singwi, Tosi, Land, and Sjölander (STLS), and the quasilocalized charge approximation (QLCA), which satisfies the third-frequency-moment (〈ω3〉) sum rule. We find that the QLCA predicts a long-wavelength correlation-induced energy gap in the out-of-phase plasmon mode, similar to the situation in electronic bilayer systems. The energy gap and the plasmon density of states are studied as a function of interlayer separation and coupling parameter rs. The results should be helpful for experimental investigations.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:07:40Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2008en
dc.identifier.doi10.1103/PhysRevB.78.115324en_US
dc.identifier.issn1098-0121
dc.identifier.urihttp://hdl.handle.net/11693/23002
dc.language.isoEnglishen_US
dc.publisherThe American Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.78.115324en_US
dc.source.titlePhysical Review B - Condensed Matter and Materials Physicsen_US
dc.titleCollective excitations of strongly coupled bilayer charged Bose liquids in the third-frequency-moment sum ruleen_US
dc.typeArticleen_US

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