Anisotropic XY antiferromagnets in a field
Institute for Theoretical Solid State Physics, RWTH Aachen University, 52056 Aachen, Germany
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Received: 12 September 2016
Revised: 14 October 2016
Published online: 5 April 2017
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.
© EDP Sciences, Springer-Verlag, 2017