Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9830121 | Journal of Crystal Growth | 2005 | 5 Pages |
Abstract
We analyze the effects of long-ranged elastic step-step interaction upon thermal roughening of a crystal surface within the framework of a solid-on-solid (SOS) model by means of Monte Carlo simulation. The repulsive step-step interaction is modeled by elastic dipole-forces located on sites adjacent to the steps. The interaction energy based on long-ranged potentials is calculated by a multi-grid scheme. In comparison with results for short-range interactions the equilibrium roughening temperature increases drastically as a consequence of anti-correlations between surface defects. Kinetics of crystal growth have been analyzed below and above the roughening temperature.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
H. Müller-Krumbhaar, F. Gutheim, C. Pütter,