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arXiv · 1003.5806

Stability of a strongly anisotropic thin epitaxial film in a wetting interaction with elastic substrate

Mikhail Khenner·Wondimu T. Tekalign·Margo S. Levine
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Abstract

The linear dispersion relation for longwave surface perturbations, as derived by Levine et al. Phys. Rev. B 75, 205312 (2007) is extended to include a smooth surface energy anisotropy function with a variable anisotropy strength (from weak to strong, such that sharp corners and slightly curved facets occur on the corresponding Wulff shape). Through detailed parametric studies it is shown that a combination of a wetting interaction and strong anisotropy, and even a wetting interaction alone results in complicated linear stability characteristics of strained and unstrained films. PACS: 68.55.J, Morphology of films; 81.15.Aa, Theory and models of film growth; 81.16.Dn, Self-assembly.

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Mikhail Khenner, Wondimu T. Tekalign, Margo S. Levine. 2011-01-03. Stability of a strongly anisotropic thin epitaxial film in a wetting interaction with elastic substrate. https://doi.org/10.1209/0295-5075%2F93%2F26001

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