Regensburg 2007 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 10: Growth processes and surface properties
DY 10.4: Talk
Monday, March 26, 2007, 17:15–17:30, H5
Submonolayer growth of binary alloys — •Mario Einax1, Sonja Ziehm2, Wolfgang Dieterich2, and Philipp Maass1 — 1Institut für Physik, Technische Universität Ilmenau, 98684 Ilmenau — 2Fachbereich Physik, Universität Konstanz, 78457 Konstanz
We investigate the submonolayer growth of binary alloys, formed by co-deposition of A- and B atoms on a flat substrate. The dependence of the number densities of stable islands is determined as a function of incoming fluxes, adatom diffusion coefficients and binding energies of A and B atoms. Based on a generalization of mean-field rate equation theory novel scaling relations are predicted, which are in good agreement with kinetic Monte Carlo simulations of the growth process. Suggestions are made how to test the new theoretical predictions in experiments.