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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/54908
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dc.creatorAntônio Sérgio Teixeira Pirespt_BR
dc.date.accessioned2023-06-14T12:05:41Z-
dc.date.available2023-06-14T12:05:41Z-
dc.date.issued2017-
dc.citation.volume435pt_BR
dc.citation.spage64pt_BR
dc.citation.epage68pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jmmm.2017.03.072pt_BR
dc.identifier.issn1873-4766pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/54908-
dc.description.resumoThe spin one Heisenberg model with an easy-plane single-ion anisotropy and spatially anisotropic nearest-neighbor coupling, frustrated by a next-nearest neighbor interaction, is studied at zero temperature using a SU(3) Schwinger boson formalism (sometimes also referred to as flavor wave theory) in a mean field approximation. The local constraint is enforced by introducing a Lagrange multiplier. The enlarged Hilbert space of S = 1 spins lead to a nematic phase that is ubiquitous to S = 1 spins with single ion anisotropy. The phase diagram shows two magnetically ordered phase, separated by a quantum paramagnetic (nematic) phase.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Magnetism and Magnetic Materials-
dc.rightsAcesso Restritopt_BR
dc.subjectAntiferomagnetpt_BR
dc.subjectQuantum phase transitionpt_BR
dc.subjectHeisenberg modelpt_BR
dc.subject.otherAntiferromagnetismopt_BR
dc.subject.otherTransições de fasespt_BR
dc.subject.otherModelo de Heisenbergpt_BR
dc.titleJ 1 x - j 1 y - j 2 square-lattice anisotropic Heisenberg modelpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0304885316328086pt_BR
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