Preroughening, Diffusion, and Growth of An FCC(111) Surface

Details Preroughening, Diffusion, and Growth of An FCC(111) Surface Preroughening, Diffusion, and Growth of An FCC(111) Surface

1995-11-20

arxiv.org/abs/cond-mat/9511095v1

Physics

Condensed Matter

Revtex + uuencoded figures, to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.75.4468

Preroughening of close-packed fcc(111) surfaces, found in rare gas solids, is an interesting, but poorly characterized phase transition. We introduce a restricted solid-on-solid model, named FCSOS, which describes it. Using mostly Monte Carlo, we study both statics, including critical behavior and scattering properties, and dynamics, including surface diffusion and growth. In antiphase scattering, it is shown that preroughening will generally show up at most as a dip. Surface growth is predicted to be continuous at preroughening, where surface self-diffusion should also drop. The physical mechanism leading to preroughening on rare gas surfaces is analysed, and identified in the step-step elastic repulsion.

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