Phase diagrams of Ising films with competing interactions

W. Selke
Institut für Theoretische Physik, Technische Hochschule Aachen, D-52056 Aachen, Germany

M. Pleimling
Institut für Theoretische Physik, Universität Erlangen, D- 91058 Erlangen, Germany

D. Catrein
Institut für Stochastische Mathematik, Technische Hochschule Aachen, D-52056 Aachen, Germany

Abstract:

The axial next-nearest-neighbour Ising (ANNNI) model of finite thickness is studied. Using mean-field theory, Monte Carlo simulations, and low temperature analyses, phase diagrams are determined, with a distinct phase diagram for each film thickness. The robustness of the phase diagrams against varying the couplings in the surface layers is analysed.


cond-mat/0203395