Issue |
Europhys. Lett.
Volume 57, Number 2, January 2002
|
|
---|---|---|
Page(s) | 178 - 183 | |
Section | General | |
DOI | https://doi.org/10.1209/epl/i2002-00387-4 | |
Published online | 01 September 2002 |
Vacancy-mediated domain growth in a driven lattice gas
1
Physics Department and Center for Stochastic
Processes in Science and Engineering
Virginia Polytechnic Institute and State University -
Blacksburg, VA 24061-0435, USA
2
Lehrstuhl Werkstoffkunde und Technologie der Metalle (WTM)
Universität Erlangen-Nürnberg -
Martensstr. 5, 91058 Erlangen, Germany
Received:
11
September
2001
Accepted:
5
November
2001
Using Monte Carlo simulations and a mean-field theory, we study domain growth in a driven lattice gas. Mediated by a single vacancy, two species of particles (“charges”) unmix, so that a disordered initial configuration develops charge-segregated domains which grow logarithmically slowly. An order parameter is defined and shown to satisfy dynamic scaling. Its scaling form is computed analytically, in excellent agreement with simulations.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 64.75.+g – Solubility, segregation, and mixing; phase separation / 66.30.-h – Diffusion in solids
© EDP Sciences, 2002
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