Incommensurate spin-density-wave and metal-insulator transition in the one-dimensional periodic Anderson model

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dc.contributor.authorBertussi, P. R.
dc.contributor.authorSilva Neto, M. B.
dc.contributor.authorRappoport, T. G.
dc.contributor.authorMalvezzi, André Luiz [UNESP]
dc.contributor.authordos Santos, R. R.
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:26:26Z
dc.date.available2014-05-20T13:26:26Z
dc.date.issued2011-08-15
dc.description.abstractWe have used the density-matrix renormalization group method to study the ground-state properties of the symmetric periodic Anderson model in one dimension. We have considered lattices with up to N-s = 50 sites, and electron densities ranging from quarter to half filling. Through the calculation of energies, correlation functions, and their structure factors, together with careful extrapolations (toward N-s -> infinity), we were able to map out a phase diagram U vs n, where U is the electronic repulsion on f orbitals, and n is the electronic density, for a fixed value of the hybridization. At quarter filling, n = 1, our data is consistent with a transition at U-c1 similar or equal to 2, between a paramagnetic (PM) metal and a spin-density-wave (SDW) insulator; overall, the region U less than or similar to 2 corresponds to a PM metal for all n < 2. For 1 < n less than or similar to 1.5 a ferromagnetic phase is present within a range of U, while for 1.5 less than or similar to n < 2, we find an incommensurate SDW phase; above a certain U-c(n), the system displays a Ruderman-Kittel-Kasuya-Yosida behavior, in which the magnetic wave vector is determined by the occupation of the conduction band. At half filling, the system is an insulating spin liquid, but with a crossover between weak and strong magnetic correlations.en
dc.description.affiliationUniv Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio de Janeiro, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Ciencias, Dept Fis, BR-17015970 Bauru, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciencias, Dept Fis, BR-17015970 Bauru, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent9
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.84.075156
dc.identifier.citationPhysical Review B. College Pk: Amer Physical Soc, v. 84, n. 7, p. 9, 2011.
dc.identifier.doi10.1103/PhysRevB.84.075156
dc.identifier.fileWOS000293830800007.pdf
dc.identifier.issn1098-0121
dc.identifier.lattes4459191234201599
dc.identifier.urihttp://hdl.handle.net/11449/8521
dc.identifier.wosWOS:000293830800007
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.titleIncommensurate spin-density-wave and metal-insulator transition in the one-dimensional periodic Anderson modelen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmer Physical Soc
unesp.author.lattes4459191234201599[4]
unesp.author.orcid0000-0002-1878-5956[3]
unesp.author.orcid0000-0002-3195-9551[4]
unesp.author.orcid0000-0002-4469-621X[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

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