Mechanism for Coherent Island Formation during Heteroepitaxy

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Abstract
Monte Carlo simulations are reported for an atomistic model of heteroepitaxial growth. Dislocations are excluded but lattice misfit is assumed to encourage atom detachment from islands by reducing the barrier for his process by a morphology-dependent strain energy. Three-dimensional, coherent islands of nearly uniform size are found to form spontaneously for misfit above a critical value

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