The spin-3/2 Blume–Capel model with competing short- and long-range interactions

Octavio D. Rodriguez Salmon, José Ricardo de Sousa, Minos A. Neto, Igor T. Padilha, J. Roberto Viana Azevedo and Francisco Dinóla Neto

Physica A: Statistical Mechanics and its Applications, 2016, vol. 464, issue C, 103-114

Abstract: The phase diagrams of the spin-3/2 Blume–Capel model with competing short and long-range interactions were studied through the free energy density obtained by analytical methods. The competition emerges when positive short-range interactions of strength K arranged in a linear chain tend to establish an anti-parallel spin order, whereas negative long-range interactions −J tend to align them in parallel. Thus, no ferromagnetic order exists for K/J>0.25. So, the phase-diagrams were scanned by varying the values of K, for 0Keywords: Spin-3/2; Ising model; Multicritical phenomena; Blume–Capel model (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:464:y:2016:i:c:p:103-114

DOI: 10.1016/j.physa.2016.07.057

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