Quantum entanglement in the neighborhood of pseudo-transition for a spin-1/2 Ising-XYZ diamond chain

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorCarvalho, I. M.-
Autor(es): dc.creatorTorrico, J.-
Autor(es): dc.creatorSouza, S. M. de-
Autor(es): dc.creatorRojas, M.-
Autor(es): dc.creatorRojas, O.-
Data de aceite: dc.date.accessioned2026-02-09T11:32:09Z-
Data de disponibilização: dc.date.available2026-02-09T11:32:09Z-
Data de envio: dc.date.issued2019-06-28-
Data de envio: dc.date.issued2019-06-28-
Data de envio: dc.date.issued2018-10-31-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/35021-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0304885317335114#!-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1142064-
Descrição: dc.descriptionRecently has been observed for some one-dimensional models that exhibit unexpected pseudo-transitions and quasi-phases. This pseudo-transition resembles a first- and second-order phase transition simultaneously. One of those models is the spin-1/2 Ising-XYZ diamond chain, composed of Ising spin particles at the nodal sites and the Heisenberg spin particles at the interstitial sites. Where we assume Ising-type interaction between the nodal and interstitial sites, the Heisenberg-type interaction between interstitial sites, and with an external magnetic field applied along the z-axis. This model presents an exact analytical solution applying the transfer matrix technique, which shows 3 phases at zero temperature in the vicinity of pseudo-transition. The pseudo-transition separates quasi-phases, these quasi-phases still hold at a finite temperature most of the pattern configurations of a true phase at zero temperature. Here we study the quantum entanglement of pair spin particles in the quasi-phase regions, which can be measured through the concurrence. Then we observe an unexpected behavior in the concurrence, that is below pseudo-critical temperature the concurrence remains almost constant up to pseudo-critical temperature, but above the pseudo-critical temperature, the concurrence behaves as for the standard one-dimensional spin models. Further, we consider the entropy behavior of the system, below pseudo-critical temperature the entropy becomes almost null, while above pseudo-critical temperature the system exhibits standard behavior as for ordinary one-dimensional spin models.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Magnetism and Magnetic Materials-
Palavras-chave: dc.subjectQuantum entanglement-
Palavras-chave: dc.subjectEntropy-
Palavras-chave: dc.subjectEmaranhamento quântico-
Palavras-chave: dc.subjectEntropia-
Título: dc.titleQuantum entanglement in the neighborhood of pseudo-transition for a spin-1/2 Ising-XYZ diamond chain-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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