Monte Carlo simulation of critical properties of ultrathin anisotropic Heisenberg films

Abstract

The crossover from two-dimensional monolayer to three-dimensional system in ultrathin magnetic films is studied using a Monte Carlo technique. Ultrathin magnetic films is modeled as an anisotropic Heisenberg model. Finite-size scaling of the critical exponents as a function of film thickness is investigated. It was found that the magnetic behaviour changes from two-dimensional to three-dimensional universality class with increasing film thickness.