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XY universality of the stacked triangular Ising antiferromagnet

M. L. Plumer, A. Mailhot

cond-matarXiv:cond-mat/9407025

Abstract

Histogram analysis of Monte-Carlo simulation results of the Ising antiferromagnet on a stacked triangular lattice are reported. Finite-size scaling estimates for critical exponents suggest XY universality. This result supports earlier predictions based on symmetry arguments and is in contrast with a recent suggestion of a new universality class by Bunker et al. [Phys. Rev. B 48, 15861 (1993)].

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