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Physical review. B, Condensed matter

Stability of the tricritical point in a three-dimensional next-nearest-neighbor Ising antiferromagnet: A Monte Carlo simulation

Hans Jürgen Herrmann, David Paul Landau

Published Jul 1, 1993• 34 citations
Publisher

Abstract

We investigate via Monte Carlo simulations the multicritical behavior of Ising antiferromagnets in three dimensions. Even for ratios between the intrasublattice and intersublattice couplings as small as R=0.05, we find tricritical behavior and no evidence for a decomposition into a critical end point and a double critical end point as predicted by mean-field theories.

DOI
10.1103/physrevb.48.239

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We investigate via Monte Carlo simulations the multicritical behavior of Ising antiferromagnets in three dimensions. Even for ratios between the intrasublattice and intersublattice couplings as small as R=0.05, we find tricritical behavior and no evidence for a decomposition into a critical end point and a double critical end point as predicted by mean-field theories.
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