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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/54915
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dc.creatorAntônio Sérgio Teixeira Pirespt_BR
dc.date.accessioned2023-06-14T13:06:34Z-
dc.date.available2023-06-14T13:06:34Z-
dc.date.issued2018-
dc.citation.volume452pt_BR
dc.citation.spage326pt_BR
dc.citation.epage330pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jmmm.2017.12.098pt_BR
dc.identifier.issn1873-4766pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/54915-
dc.description.resumoWe consider a two dimensional compass model with a next and a next near Heisenberg term. The interactions are of two types: frustrated near neighbor compass interactions of amplitudes Jx and Jy, and next and next near neighbor Heisenberg interactions with exchanges J1 and J2 respectively. The Heisenberg interactions are isotropic in spin space, but the compass interactions depend on the bond direction. The ground state of the pure compass model is degenerated with a complex phase diagram. This degeneracy is removed by the Heisenberg terms leading to the arising of a magnetically ordered phase with a preferred direction. We calculate the phase diagrams at zero temperature for the case where, for J2 = 0, we have an antiferromagnetic ground state. We show that varying the value of J2, a magnetically disordered phase can be reached for small values of the compass interactions. We also calculate the critical temperature for a specified value of parameters.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.subjectAntiferromagnetpt_BR
dc.subjectCompass modelpt_BR
dc.subjectFrustrated systemspt_BR
dc.subject.otherAntiferromagnetismopt_BR
dc.titleTwo dimensional compass model with Heisenberg interactionspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0304885317320449pt_BR
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