Anomalous Roughness in Dimer-Type Surface Growth

Title
Anomalous Roughness in Dimer-Type Surface Growth
Authors
Park, H.
Keywords
ROUGHENING TRANSITION, CRITICAL-BEHAVIOR
Issue Date
2000-04
Publisher
AMERICAN PHYSICAL SOC
Abstract
We point out how geometric features affect the scaling properties of nonequilibrium dynamic processes, by a model for surface growth where particles can deposit and evaporate only in dimer form, but dissociate on the surface. Pinning valleys (hilltops) develop spontaneously and the surface facets for all growth (evaporation) biases. More intriguingly, the scaling properties of the rough one dimensional equilibrium surface are anomalous. Its width, W similar to L-alpha, diverges with system size L as alpha = 1/3 instead of the conventional universal value alpha = 1/2. This originates from a topological nonlocal evenness constraint on the surface configurations.
URI
http://dspace.inha.ac.kr/handle/10505/20244
ISSN
0031-9007
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
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