Geometrically frustrated Ising-Heisenberg spin model on expanded Kagomé lattice

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorRojas, Onofre-
Data de aceite: dc.date.accessioned2026-02-09T11:54:04Z-
Data de disponibilização: dc.date.available2026-02-09T11:54:04Z-
Data de envio: dc.date.issued2020-05-15-
Data de envio: dc.date.issued2020-05-15-
Data de envio: dc.date.issued2019-03-01-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/40955-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/abs/pii/S0304885318318523#!-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1149942-
Descrição: dc.descriptionHere we consider the Ising-Heisenberg model in the expanded Kagomé lattice, also known as triangle-dodecagon (3–12) or star lattice. This model can still be understood as a decorated honeycomb lattice. Assuming that the Heisenberg spins are at the vertices of the triangle while other spins are of the Ising type. Thus, this model is equivalent to an effective Kagomé Ising lattice, through the decoration transformation technique. Thus this means that the model is exactly solvable so we can study the most relevant properties of this model. Like the phase diagram at zero temperature, exhibiting a frustrated phase, a ferromagnetic phase, a classical ferrimagnetic phase and a quantum ferrimagnetic phase. We observed that Heisenberg spin exchange interaction influences the frustrated phase, but we rigorously verify that the magnitude and origin of the frustration emerge in a similar way to antiferromagnetic Ising Kagomé lattice. Likewise, the thermodynamic properties of the model can also be obtained, such as the critical temperature as a dependence of the Hamiltonian parameters and the spontaneous magnetization of the model. Besides, we investigated the entropy of the model, identifying its residual entropy in the frustrated region. Even we analyze the specific heat behavior as a temperature dependence, to deal with the phase transition.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Magnetism and Magnetic Materials-
Palavras-chave: dc.subjectExactly solvable modes-
Palavras-chave: dc.subjectDecoration transformation-
Palavras-chave: dc.subjectKagomé lattice-
Palavras-chave: dc.subjectIsing model-
Palavras-chave: dc.subjectIsing-Heisenberg model-
Palavras-chave: dc.subjectEstrutura Kagomé-
Palavras-chave: dc.subjectModelo Ising-
Palavras-chave: dc.subjectModelo Ising-Heisenberg-
Título: dc.titleGeometrically frustrated Ising-Heisenberg spin model on expanded Kagomé lattice-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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