Publication: Roughening transitions of driven surface growth
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ISSN: 1098-0121 (print version)
ISSN: 1550-235X (online version)
Publication date
1995-05-15
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American Physical Society
Abstract
A model of surface growth given by a two-dimensional discrete, driven, damped sine-Gordon
equation is studied using Langevin dynamics. Our large-scale simulations show that the equilibrium
Kosterlitz-Thouless roughening transition splits into two crossovers (or transitions) under the
external force of, e.g., vapor-surface chemical potential difference. Three different regimes are characterized
in terms of roughness, growth rate, and height-height correlations-the onset of a rough
phase is accompanied by the suppresion of oscillatory growth. Our results are interpreted consistently
within a renormalization group framework. We discuss the generality of our conclusions and
propose specific comparisons with experiments
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Bibliographic citation
Physical Review B, vol. 51, n. 20, 15 mayo 1995. Pp. 14 664–14 668