Decay of an Island on a Facet via Surface Diffusion : Condensed Matter: Structure, etc.
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概要
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We study the decay process of a small island formed on a facet by numerical integration of a simple model and by theoretical analysis. The relaxation proceeds via surface diffusion without evaporation and impingement of atoms. Steps on the top of the island shrink due to the step tension and a small facet appears. The size of the facet increases as the power of time R_f~t^ν, where the exponent ν depends on the initial shape and the rate limiting process. In the kinetics-limited case, step bunching occurs from the bottom and the enlargement of the facet stops at some stage. Analytical expressions for the bunch velocity and the island profile are found.
- 社団法人日本物理学会の論文
- 2000-02-15
著者
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Uwaha Makio
Department Of Physics Faculty Of Science Nagoya University
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Watanabe Katsuhiro
Department Of Physics Nagoya University:(present)hitachi Ulsi Systems Co.
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Watanabe Katsuhiro
Department Of Biological Science Faculty Of Agriculture Yamaguchi University
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