Journal article
Phase transitions and steady-state microstructures in a two-temperature lattice-gas model with mobile active impurities
The nonequilibrium, steady-state phase transitions and the structure of the different phases of a two-dimensional system with two thermodynamic temperatures are studied via a simple lattice-gas model with mobile active impurities ("hot/cold spots'') whose activity is controlled by an external drive.
The properties of the model are calculated by Monte Carlo computer-simulation techniques. The two temperatures and the external drive on the system lead to a rich phase diagram including regions of microstructured phases in addition to macroscopically ordered (phase-separated) and disordered phases.
Depending on the temperatures, microstructured phases of both lamellar and droplet symmetry arise, described by a length scale that is determined by the characteristic temperature controlling the diffusive motion of the active impurities.
Language: | English |
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Year: | 2000 |
Pages: | 7070-7076 |
ISSN: | 10953787 , 1063651x , 24700053 and 24700045 |
Types: | Journal article |
DOI: | 10.1103/PhysRevE.62.7070 |
ORCIDs: | 0000-0002-4258-8960 and Henriksen, Jonas Rosager |