Abstract

Recent finite-size scaling results of histogram Monte-Carlo simulations on the stacked triangular antiferromagnet are reviewed. Estimates for critical exponents associated with phase transitions to novel symmetry states of the Ising, XY, and Heisenberg models are compared with theory and experiment. New results are presented for a magnetic-field induced 3-state Potts transition in the XY model which is very weakly first order in character.

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