Metastable states in ultrathin magnetic films
Abstract
The equilibrium phase diagram of a twodimensional Ising model with competing exchange and dipolar interactions is analyzed using a Monte Carlo simulation technique. We consider the low temperature region of the (delta,T) phase diagram (delta being the ratio between the strengths of the exchange and dipolar interactions) for the range of values of delta where striped phases with widths h=1 and h=2 are present. We show that the transition line between both phases is a first order one. We also show that, associated with the first order phase transition, there appear metastable states of the phase h=2 in the region where the phase h=1 is the thermodynamically stable one and viceversa.
 Publication:

arXiv eprints
 Pub Date:
 October 2001
 arXiv:
 arXiv:condmat/0110182
 Bibcode:
 2001cond.mat.10182G
 Keywords:

 Disordered Systems and Neural Networks;
 Statistical Mechanics
 EPrint:
 5 pages, 5 figures