Dynamics and ordering of the nucleationless island formation in heteroepitaxy

Details Dynamics and ordering of the nucleationless island formation in heteroepitaxy Dynamics and ordering of the nucleationless island formation in heteroepitaxy

2009-06-23

arxiv.org/abs/0906.4203v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures

Scientific paper

We study the morphological evolution of strained islands in growing crystal films by use of a continuum description including wetting, elasticity and deposition flux. Wetting breaks translational invariance, allowing the flux to tune different nonlinear regimes. Increasing the flux, we find first an annealing-like dynamics, then a slower but non-conventional ripening followed by a steady regime, while the island density continuously increases. The islands develop spatial correlations and ordering with a narrow two-peaked distance distribution and ridge-like clusters of islands for high flux.

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