Phase transition in ultrathin magnetic films with long range interactions
Computational Physics
2007-05-23 v1
Abstract
Ultrathin magnetic films can be modeled as an anisotropic Heisenberg model with long range dipolar interactions. It is believed that the phase diagram presents three phases: A ordered ferromagnetic phase (I), a phase characterized by a change from out-of-plane to in-plane in the magnetization (II), and a high temperature paramagnetic phase (III). It is claimed that the border lines from phase I to III and II to III are of second order and from I to II is first order. In the present work we have performed a very careful Monte Carlo simulation of the model. Our results strongly support that the line separating phase II and III is of the BKT type.
Cite
@article{arxiv.physics/0604067,
title = {Phase transition in ultrathin magnetic films with long range interactions},
author = {M. Rapini and R. A. Dias and B. V. Costa},
journal= {arXiv preprint arXiv:physics/0604067},
year = {2007}
}
Comments
7 pages, 21 figures