Modelling sublimation and atomic layer epitaxy in the presence of competing surface reconstructions

[摘要] We present a solid-on-solid model of a binary AB compound, where atoms of type A in the topmost layer interact via anisotropic interactions different from those inside the bulk. Depending on temperature and particle flux, this model displays surface reconstructions similar to those of (001) surfaces of II-VI semiconductors. We show, that our model qualitatively reproduces many of the characteristic features of these materials which have been observed during sublimation and atomic layer epitaxy. We predict some previously unknown effects which might be observed experimentally. (C) 2001 Elsevier Science B.V. All rights reserved.

[发布日期] 2001-08-01

[关键词] Monte Carlo simulations;surface relaxation and reconstruction;models of non-equilibrium phenomena evaporation and sublimation;growth