In this work we study the thermodynamic properties of ultrathin ferromagnetic dots using Monte Carlo simulations. We investigate the vortex density as a function of the temperature and the vortex structure in monolayer dots with perpendicular anisotropy and long-range dipole interaction. The interplay between these two terms in the hamiltonian leads to an interesting behavior of the thermodynamic quantities as well as the vortex density.
@article{arxiv.physics/0604080,
title = {Monte Carlo Simulations of Ultrathin Magnetic Dots},
author = {M. Rapini and R. A. Dias and D. P. Landau and B. V. Costa},
journal= {arXiv preprint arXiv:physics/0604080},
year = {2015}
}