Abstract

Abstract We simulate the epitaxial growth and annealing of Ge x Si 1− x alloys on a Si(001) substrate using a stochastic Monte Carlo technique. Initiation of phase segregation into Si(001) and Ge(001) layers is obtained in our simulation. This results from the kinetically more active nature of Ge atoms as compared to Si atoms, together with an effect arising from the compressive strain in the alloy layers. We discuss our results in the light of the existing experimental data.

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