Ferromagnetic phases due to competing short- and long-range interactions in the spin-5/2 and spin-2 Blume–Capel model

Octavio D. Rodriguez Salmon, Minos A. Neto, Francisco Dinóla Neto, Denis Américo Murillo Pariona, Justo Rojas Tapia

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

4 Citas (Scopus)

Resumen

© 2018 Elsevier B.V. We broaden the study of the statistical physics of the spin-S Blume–Capel model with ferromagnetic mean-field interactions J in competition with short-range antiferromagnetic interactions K in a linear chain in the thermodynamic limit. This work is dedicated to the case when S takes the half-integer spin S=5/2 and when S assumes the integer value S=2. In both cases the phase diagrams exhibit new ferromagnetic phases (for certain values of K) enclosed by branches emerging from the first-order frontiers of the pure ferromagnetic model. For finite temperatures the complex topologies were obtained by numerical minimization of the free energy and some results were confirmed by Monte Carlo simulations.
Idioma originalInglés estadounidense
Páginas (desde-hasta)3325-3332
Número de páginas8
PublicaciónPhysics Letters, Section A: General, Atomic and Solid State Physics
DOI
EstadoPublicada - 23 nov 2018

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