Anisotropic XY antiferromagnets in a field
arXiv:1609.03365 · doi:10.1140/epjst/e2016-60235-9
Abstract
Classical anisotropic XY antiferromagnets in a field on square and simple cubic lattices are studied using mainly Monte Carlo simulations. While in two dimensions the ordered antiferromagnetic and spin--flop phases are observed to be separated by a narrow disordered phase, a line of direct transitions of first order between the two phases and a bicritical point are found in three dimensions. Results are compared to previous findings.
6 pages, 7 figures