ISSN:
1572-9613
Keywords:
Nonequilibrium steady state
;
driven diffusive systems
;
phase ordering dynamics
;
interfacial instabilities
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We study phase separation dynamics in a driven diffusive system. Our simulations are based on the Cahn-Hilliard equation with an additional flux term due to an external field. We study the dynamical scaling parallel and perpendicular to the field. A crossover is observed from isotropic domains at early times to extremely anisotropic domains at later times. We find that the inverse interfacial density (an isotropic measure of the domain size) increases ast α, with α=1/3, from early times independent of the field strength, even though we do not observe dynamical scaling during these times. Our results indicate that a growth exponent α=1/3 may be more universal than previously expected. We analyze the dynamics in terms of surface driven instabilities and one-dimensional solitary waves.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01055717
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