Interfacial dynamics with long-range screening
- 1 March 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 45 (6) , 3903-3912
- https://doi.org/10.1103/physreva.45.3903
Abstract
We study interfacial dynamics far from equilibrium in models with nonlocal shadowing effects in two spatial dimensions. Results from a nonequilibrium solid-on-solid model and a nonlinear, nonlocal partial-differential equation describing the time evolution of an interface are presented. In a wide temperature range, the systems form columnar structures that coarsen according to a power law. The coarsening exponents are measured in both models. The power spectrum of the interface shape exhibits a dynamic scaling. At low temperatures the system is described by the equation of Kardar, Parisi, and Zhang [Phys. Rev. Lett. 56, 889 (1986)]. We discuss the dynamic universality, and present evidence for a nonequilibrium phase transition between a rough and a columnar phase for the solid-on-solid model.Keywords
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