J 1 x - j 1 y - j 2 square-lattice anisotropic Heisenberg model

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dc.creatorAntônio Sérgio Teixeira Pires
dc.date.accessioned2023-06-14T12:05:41Z
dc.date.accessioned2025-09-09T00:08:32Z
dc.date.available2023-06-14T12:05:41Z
dc.date.issued2017
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.identifier.doihttps://doi.org/10.1016/j.jmmm.2017.03.072
dc.identifier.issn1873-4766
dc.identifier.urihttps://hdl.handle.net/1843/54908
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Magnetism and Magnetic Materials
dc.rightsAcesso Restrito
dc.subjectAntiferromagnetismo
dc.subjectTransições de fases
dc.subjectModelo de Heisenberg
dc.subject.otherAntiferomagnet
dc.subject.otherQuantum phase transition
dc.subject.otherHeisenberg model
dc.titleJ 1 x - j 1 y - j 2 square-lattice anisotropic Heisenberg model
dc.typeArtigo de periódico
local.citation.epage68
local.citation.spage64
local.citation.volume435
local.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.
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0304885316328086

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