Determination of step--edge barriers to interlayer transport from surface morphology during the initial stages of homoepitaxial growth
arXiv:cond-mat/9503119 · doi:10.1103/PhysRevB.51.14798
Abstract
We use analytic formulae obtained from a simple model of crystal growth by molecular--beam epitaxy to determine step--edge barriers to interlayer transport. The method is based on information about the surface morphology at the onset of nucleation on top of first--layer islands in the submonolayer coverage regime of homoepitaxial growth. The formulae are tested using kinetic Monte Carlo simulations of a solid--on--solid model and applied to estimate step--edge barriers from scanning--tunneling microscopy data on initial stages of Fe(001), Pt(111), and Ag(111) homoepitaxy.
4 pages, a Postscript file, uuencoded and compressed. Physical Review B, Rapid Communications, in press.
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