Equivalence between non-bilinear spin-S Ising model and Wajnflasz model

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorRojas, O.-
Autor(es): dc.creatorSouza, S. M. de-
Data de aceite: dc.date.accessioned2026-02-09T12:27:40Z-
Data de disponibilização: dc.date.available2026-02-09T12:27:40Z-
Data de envio: dc.date.issued2020-11-12-
Data de envio: dc.date.issued2020-11-12-
Data de envio: dc.date.issued2012-05-25-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/45508-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1140/epjb/e2012-20998-0-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1161802-
Descrição: dc.descriptionWe propose the mapping of polynomial of degree 2S constructed as a linear combination of powers of spin-S (for simplicity, we called as spin-S polynomial) onto spin-crossover state. The spin-S polynomial in general can be projected onto non-symmetric degenerated spin up (high-spin) and spin down (low-spin) momenta. The total number of mapping for each general spin-S is given by 2(22S − 1). As an application of this mapping, we consider a general non-bilinear spin-S Ising model which can be transformed onto spin-crossover described by Wajnflasz model. Using a further transformation we obtain the partition function of the effective spin-1/2 Ising model, making a suitable mapping the non-symmetric contribution leads us to a spin-1/2 Ising model with a fixed external magnetic field, which in general cannot be solved exactly. However, for a particular case of non-bilinear spin-S Ising model could become equivalent to an exactly solvable Ising model. The transformed Ising model exhibits a residual entropy, then it should be understood also as a frustrated spin model, due to competing parameters coupling of the non-bilinear spin-S Ising model.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceThe European Physical Journal B: Condensed Matter and Complex Systems-
Palavras-chave: dc.subjectStatistical physics-
Palavras-chave: dc.subjectNonlinear physics-
Título: dc.titleEquivalence between non-bilinear spin-S Ising model and Wajnflasz model-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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