Modeling sublimation by computer simulation: morphology dependent effective energies

Details Modeling sublimation by computer simulation: morphology dependent effective energies Modeling sublimation by computer simulation: morphology dependent effective energies

1997-08-28

arxiv.org/abs/cond-mat/9708217v1

revised version in: Surface Science 401(1), pp. 96-104 (1998)

Physics

Condensed Matter

12 pages, 6 Postscript figures, uses psfig.sty

Scientific paper

10.1016/S0039-6028(97)00916-3

Solid-On-Solid (SOS) computer simulations are employed to investigate the sublimation of surfaces. We distinguish three sublimation regimes: layer-by-layer sublimation, free step flow and hindered step flow. The sublimation regime is selected by the morphology i.e. the terrace width. To each regime corresponds another effective energy. We propose a systematic way to derive microscopic parameters from effective energies and apply this microscopical analysis to the layer-by-layer and the free step flow regime. We adopt analytical calculations from Pimpinelli and Villain and apply them to our model. Key-Words: Computer simulations; Models of surface kinetics; Evaporation and Sublimation; Growth; Surface Diffusion; Surface structure, morphology, roughness, and topography; Cadmium telluride

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