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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBertussi, Pedro R.
dc.creatorMalvezzi, André Luiz
dc.creatorPaiva, Thereza
dc.creatordos Santos, Raimundo R.
dc.date2014-05-20T13:26:25Z
dc.date2014-05-20T13:26:25Z
dc.date2009-06-01
dc.date.accessioned2017-04-05T20:05:34Z
dc.date.available2017-04-05T20:05:34Z
dc.identifierPhysical Review B. College Pk: Amer Physical Soc, v. 79, n. 22, p. 4, 2009.
dc.identifier1098-0121
dc.identifierhttp://hdl.handle.net/11449/8518
dc.identifier10.1103/PhysRevB.79.220513
dc.identifierWOS:000267699300021
dc.identifierWOS000267699300021.pdf
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.79.220513
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/856873
dc.descriptionWe 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.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageeng
dc.publisherAmer Physical Soc
dc.relationPhysical Review B
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectantiferromagnetic materials
dc.subjectbinding energy
dc.subjectboron compounds
dc.subjectdysprosium compounds
dc.subjectground states
dc.subjectholmium compounds
dc.subjectHubbard model
dc.subjectKondo effect
dc.subjectmagnetic moments
dc.subjectnickel compounds
dc.subjectphase diagrams
dc.subjectrenormalisation
dc.subjectspin density waves
dc.subjectsuperconducting materials
dc.subjectthulium compounds
dc.titleKondo-attractive-Hubbard model for the ordering of local magnetic moments in superconductors
dc.typeOtro


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