3 years ago

Effect of Step Anisotropy on Crystal Growth Inhibition by Immobile Impurity Stoppers

Effect of Step Anisotropy on Crystal Growth Inhibition by Immobile Impurity Stoppers
Robert V. Kohn, James P. Lee-Thorp, Alexander G. Shtukenberg
Step pinning by adsorbed impurities is an important crystal growth inhibition mechanism. A seminal 1958 study by Cabrera and Vermilyea considered a periodic array of pinning sites. We revisit this problem using numerical simulations and a new type of analytical approximation, for anisotropic surface energies that induce faceting. The average step velocity is surprisingly insensitive to anisotropy.

Publisher URL: http://dx.doi.org/10.1021/acs.cgd.7b01006

DOI: 10.1021/acs.cgd.7b01006

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