Unusual domain growth behavior in the compressible ising model
AUTOR(ES)
Mitchell, S. J., Pereira, Luiz F. C., Landau, D. P.
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2008-03
RESUMO
Large scale Monte Carlo simulations have been used to study long-time domain growth behavior in a compressible, two-dimensional Ising model undergoing phase separation. The system is quenched below the transition temperature from a random spin state, and we investigated the late-time domain size growth law, R(t) = A + Bt n. For "lattice mismatched" systems, we found n = 0.224 ± 0.004 which deviates significantly from the Lifshitz-Slyozov value of n = 1/3 for late-time growth . For a compressible model with no mismatch, we find only a slight deviation from n = 1/3. These results strongly suggest that we do not yet fully understand domain growth.
Documentos Relacionados
- Dynamic behavior of cluster observables for the 2d Ising model
- The Ising model as a playground for the study of wetting and interface behavior
- Dynamical behavior of the four-body transverse Ising model with random bonds and fields
- What do Monte Carlo simulations tell us about compressible Ising models?
- Wang-Landau sampling of an asymmetric ising model: a study of the critical endpoint behavior