Kondo-attractive-Hubbard model for the ordering of local magnetic moments in superconductors

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dc.contributor.authorBertussi, Pedro R.
dc.contributor.authorMalvezzi, André Luiz [UNESP]
dc.contributor.authorPaiva, Thereza
dc.contributor.authordos Santos, Raimundo R.
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:26:25Z
dc.date.available2014-05-20T13:26:25Z
dc.date.issued2009-06-01
dc.description.abstractWe consider local magnetic moments coupled to conduction electrons with on-site attraction in order to discuss the interplay between pairing and magnetic order. We probe the ground-state properties of this model on a one-dimensional lattice through pair binding energies and several correlation functions calculated by means of density-matrix renormalization group. A phase diagram is obtained (for fixed electron density 1/3) from which we infer that coexistence between magnetic order and superconductivity is robust at the expense of a continuous distortion of the magnetic arrangement of the local moments as evidenced by a strong dependence of the characteristic wave vector k(*) on the coupling constants. This allows us to understand some trends of the coexistence, such as the influence of the rare earth on k(*), as observed experimentally in the borocarbides.en
dc.description.affiliationUniv Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio de Janeiro, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Fis, Fac Ciencias, BR-17015970 Bauru, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Fis, Fac Ciencias, BR-17015970 Bauru, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFUJB
dc.format.extent4
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.79.220513
dc.identifier.citationPhysical Review B. College Pk: Amer Physical Soc, v. 79, n. 22, p. 4, 2009.
dc.identifier.doi10.1103/PhysRevB.79.220513
dc.identifier.fileWOS000267699300021.pdf
dc.identifier.issn1098-0121
dc.identifier.lattes4459191234201599
dc.identifier.urihttp://hdl.handle.net/11449/8518
dc.identifier.wosWOS:000267699300021
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review B
dc.relation.ispartofsjr1,604
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectantiferromagnetic materialsen
dc.subjectbinding energyen
dc.subjectboron compoundsen
dc.subjectdysprosium compoundsen
dc.subjectground statesen
dc.subjectholmium compoundsen
dc.subjectHubbard modelen
dc.subjectKondo effecten
dc.subjectmagnetic momentsen
dc.subjectnickel compoundsen
dc.subjectphase diagramsen
dc.subjectrenormalisationen
dc.subjectspin density wavesen
dc.subjectsuperconducting materialsen
dc.subjectthulium compoundsen
dc.titleKondo-attractive-Hubbard model for the ordering of local magnetic moments in superconductorsen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmer Physical Soc
unesp.author.lattes4459191234201599[2]
unesp.author.orcid0000-0002-4199-3809[3]
unesp.author.orcid0000-0002-3195-9551[2]
unesp.author.orcid0000-0002-4469-621X[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

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