Existence of a metallic phase in a 1D Holstein-Hubbard model at half filling

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dc.citation.epage59en_US
dc.citation.issueNumber1-2en_US
dc.citation.spage55en_US
dc.citation.volumeNumber457en_US
dc.contributor.authorKrishna, P. M.en_US
dc.contributor.authorChatterjee, A.en_US
dc.date.accessioned2016-02-08T10:13:57Z
dc.date.available2016-02-08T10:13:57Z
dc.date.issued2007en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractThe one-dimensional half-filled Holstein-Hubbard model is studied using a series of canonical transformations including phonon coherence effect that partly depends on the electron density and is partly independent and also incorporating the on-site and the nearest-neighbour phonon correlations and the exact Bethe-ansatz solution of Lieb and Wu. It is shown that choosing a better variational phonon state makes the polarons more mobile and widens the intermediate metallic region at the charge-density-wave-spin-density-wave crossover recently predicted by Takada and Chatterjee. The presence of this metallic phase is indeed a favourable situation from the point of view of high temperature superconductivity.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:13:57Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2007en
dc.identifier.doi10.1016/j.physc.2007.02.015en_US
dc.identifier.issn0921-4534
dc.identifier.urihttp://hdl.handle.net/11693/23439
dc.language.isoEnglishen_US
dc.publisherElsevier B.V.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.physc.2007.02.015en_US
dc.source.titlePhysica C : Superconductivity and its Applicationsen_US
dc.subjectCarrier concentrationen_US
dc.subjectCoherent lighten_US
dc.subjectCorrelation methodsen_US
dc.subjectPhase transitionsen_US
dc.subjectPhononsen_US
dc.subjectPolaronsen_US
dc.subjectCoherence effectsen_US
dc.subjectMetallic phaseen_US
dc.subjectPhonon correlationen_US
dc.subjectSpin densityen_US
dc.subjectHubbard modelen_US
dc.titleExistence of a metallic phase in a 1D Holstein-Hubbard model at half fillingen_US
dc.typeArticleen_US

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