Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/45512
Registro completo de metadados
Campo DCValorIdioma
dc.creatorPaulinelli, H. G.-
dc.creatorSouza, S. M. de-
dc.creatorRojas, Onofre-
dc.date.accessioned2020-11-13T23:37:13Z-
dc.date.available2020-11-13T23:37:13Z-
dc.date.issued2013-07-03-
dc.identifier.citationPAULINELLI, H. G.; SOUZA, S. M. de; ROJAS, O. Thermal entanglement in an orthogonal dimer-plaquette chain with alternating Ising-Heisenberg coupling. Journal of Physics: Condensed Matter, [S.l.], v. 25, n. 30, July 2013. DOI: 10.1088/0953-8984/25/30/306003.pt_BR
dc.identifier.urihttps://iopscience.iop.org/article/10.1088/0953-8984/25/30/306003pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/45512-
dc.description.abstractIn this paper we explore the entanglement in an orthogonal dimer-plaquette Ising–Heisenberg chain, assembled between plaquette edges, also known as orthogonal dimer plaquettes. The quantum entanglement properties involving an infinite chain structure are quite important, not only because the mathematical calculation is cumbersome but also because real materials are well represented by infinite chains. Using the local gauge symmetry of this model, we are able to map onto a simple spin-1 like Ising and spin-1/2 Heisenberg dimer model with single effective ion anisotropy. Thereafter this model can be solved using the decoration transformation and transfer matrix approach. First, we discuss the phase diagram at zero temperature of this model, where we find five ground states, one ferromagnetic, one antiferromagnetic, one triplet–triplet disordered and one triplet–singlet disordered phase, beside a dimer ferromagnetic–antiferromagnetic phase. In addition, we discuss the thermodynamic properties such as entropy, where we display the residual entropy. Furthermore, using the nearest site correlation function it is possible also to analyze the pairwise thermal entanglement for both orthogonal dimers. Additionally, we discuss the threshold temperature of the entangled region as a function of Hamiltonian parameters. We find a quite interesting thin reentrance threshold temperature for one of the dimers, and we also discuss the differences and similarities for both dimers.pt_BR
dc.languageen_USpt_BR
dc.publisherIOP Publishingpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceJournal of Physics: Condensed Matterpt_BR
dc.subjectQuantum entanglementpt_BR
dc.subjectHeisenberg chainpt_BR
dc.subjectThermodynamicspt_BR
dc.titleThermal entanglement in an orthogonal dimer-plaquette chain with alternating Ising-Heisenberg couplingpt_BR
dc.typeArtigopt_BR
Aparece nas coleções:DFI - Artigos publicados em periódicos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.