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

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Autor(es): dc.contributorUniversidade Federal do Rio de Janeiro (UFRJ)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorBertussi, P. R.-
Autor(es): dc.creatorNeto, M. B. Silva-
Autor(es): dc.creatorRappoport, T. G.-
Autor(es): dc.creatorMalvezzi, A. L.-
Autor(es): dc.creatorDos Santos, R. R.-
Data de aceite: dc.date.accessioned2025-08-21T16:47:24Z-
Data de disponibilização: dc.date.available2025-08-21T16:47:24Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2011-08-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.84.075156-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/226506-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/226506-
Descrição: dc.descriptionWe 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 Ns=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 Ns→ ), we were able to map out a phase diagram Uvsn, 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 2, between a paramagnetic (PM) metal and a spin-density-wave (SDW) insulator; overall, the region U 2 corresponds to a PM metal for all n<2. For 1<n 1.5 a ferromagnetic phase is present within a range of U, while for 1.5 n<2, we find an incommensurate SDW phase; above a certain Uc(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. © 2011 American Physical Society.-
Descrição: dc.descriptionInstituto de Física Universidade Federal Do Rio de Janeiro Caixa Postal 68528, 21941-972 Rio de Janeiro RJ-
Descrição: dc.descriptionDepartamento de Física Faculdade de Ciências Universidade Estadual Paulista, Caixa Postal 473, 17015-970 Bauru SP-
Descrição: dc.descriptionDepartamento de Física Faculdade de Ciências Universidade Estadual Paulista, Caixa Postal 473, 17015-970 Bauru SP-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review B - Condensed Matter and Materials Physics-
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Título: dc.titleIncommensurate spin-density-wave and metal-insulator transition in the one-dimensional periodic Anderson model-
Tipo de arquivo: dc.typelivro digital-
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