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dc.contributor.authorAdhikari, S. K.-
dc.contributor.authorCasas, M.-
dc.contributor.authorPuente, A.-
dc.contributor.authorRigo, A.-
dc.contributor.authorFortes, M.-
dc.contributor.authorSolis, M. A.-
dc.contributor.authorde Llano, M.-
dc.contributor.authorValladares, A. A.-
dc.contributor.authorRojo, O.-
dc.identifier.citationPhysical Review B. College Pk: American Physical Soc, v. 62, n. 13, p. 8671-8674, 2000.-
dc.description.abstractCooper pairing in two dimensions is analyzed with a set of renormalized equations to determine its binding energy for any fermion number density and all coupling assuming a,generic pairwise residual interfermion interaction. Also considered are Cooper pairs (CP's) with nonzero center-of-mass momentum (CMM) and their binding energy is expanded analytically in powers of the CMM up to quadratic terms. A Fermi-sea-dependent linear term in the CMM dominates the pair excitation energy in weak coupling (also called the BCS regime) while the more familiar quadratic term prevails in strong coupling (the Bose regime). The crossover, though strictly unrelated to BCS theory per se, is studied numerically as it is expected to play a central role in a model of superconductivity as a Bose-Einstein condensation of CPs where the transition temperature vanishes for all dimensionality d less than or equal to 2 for quadratic dispersion, but is nonzero for all d greater than or equal to 1 for linear dispersion.en
dc.publisherAmerican Physical Soc-
dc.sourceWeb of Science-
dc.titleCooper pair dispersion relation for weak to strong couplingen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniv Illes Balears-
dc.contributor.institutionUniv Nacl Autonoma Mexico-
dc.contributor.institutionNatl Autonomous Univ Mexico-
dc.contributor.institutionSecretaria Acad-
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil-
dc.description.affiliationUniv Illes Balears, Dept Fis, E-07071 Palma de Mallorca, Spain-
dc.description.affiliationUniv Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico-
dc.description.affiliationNatl Autonomous Univ Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico-
dc.description.affiliationSecretaria Acad, PESTIC, Mexico City 04430, DF, Mexico-
dc.description.affiliationIPN, CINVESTAV, Mexico City 04430, DF, Mexico-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofPhysical Review B-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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