Crossing the Coexistence Line at Constant Magnetization |
| |
Authors: | Michel Pleimling Alfred Hüller |
| |
Institution: | (1) Institut für Theoretische Physik 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, D-91058 Erlangen, Germany;(2) Laboratoire de Physique des Matériaux, Laboratoire associé au CNRS UMR 7556, Université Henri Poincaré Nancy I, B.P. 239, F-54506 Vanduvre lès Nancy Cedex, France |
| |
Abstract: | Using Monte Carlo histogram methods, the microcanonical caloric curve is computed for the Ising model in two and three dimensions with fixed magnetization. Whereas the signatures of a possible first order phase transition are clearly visible for large systems, intriguing finite size effects are revealed for smaller system sizes. The behaviour of the caloric curve is studied in a systematic way. Furthermore, results for the thermal stability of three-dimensional droplets of minority spins inside the two-phase region are presented. The effect of the percolation transition on the stability of these droplets is discussed. |
| |
Keywords: | Ising model with fixed magnetization coexistence line microcanonical caloric curve Monte Carlo simulation |
本文献已被 SpringerLink 等数据库收录! |
|