Roughening transitions of driven surface growth

Journal Article · Mon May 15 04:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.51.14664· OSTI ID:69490

Sanchez, A ^[1]; Cai, D; Gronbech-Jensen, N; Bishop, A R ^[1]; Wang, Z J ^[1]

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1. Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

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 suppression 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.

• Sponsoring Organization: USDOE
• OSTI ID: 69490
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 20 Vol. 51; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CRYSTAL GROWTH
CRYSTAL STRUCTURE
KOSTERLITZ-THOULESS THEORY
ROUGHNESS
TEMPERATURE DEPENDENCE
THIN FILMS