Multicritical points in the mixed spin-1 and spin-32 Ising system on a square lattice with different single-ion anisotropies

A Bobák

Physica A: Statistical Mechanics and its Applications, 2000, vol. 286, issue 3, 531-540

Abstract: Using an effective-field theory we study a multicritical behaviour of the mixed spin-1 and spin-32 Ising model with different anisotropies on a square lattice. We find a variety of topologies of the finite-temperature phase diagrams, with several multicritical points. The highest-order multicritical entity is the fourth-order point, which contradicts earlier results obtained within the same theoretical framework.

Keywords: Mixed-spin Ising model; Single-ion anisotropy; Multicritical behaviour (search for similar items in EconPapers)
Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:286:y:2000:i:3:p:531-540

DOI: 10.1016/S0378-4371(00)00404-0

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