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

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.

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Year of publication:	2000
Authors:	Bobák, A
Published in:	Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 286.2000, 3, p. 531-540
Publisher:	Elsevier
Subject:	Mixed-spin Ising model \| Single-ion anisotropy \| Multicritical behaviour

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://ebvufind01.dmz1.zbw.eu/10011060392