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Diffusion on a stepped substrate

Juha Merikoski·See-Chen Ying
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Abstract

We present results for collective diffusion of adatoms on a stepped substrate with a submonolayer coverage. We study the combined effect of the additional binding at step edge, the Schwoebel barrier, the enhanced diffusion along step edges, and the finite coverage on diffusion as a function of step density. In particular, we examine the crossover from step--dominated diffusion at high step density to terrace-dominated behavior at low step density in a lattice-gas model using analytical Green's function techniques and Monte Carlo simulations. The influence of steps on diffusion is shown to be more pronounced than previously anticipated.

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Juha Merikoski, See-Chen Ying. 1996-05-20. Diffusion on a stepped substrate. https://doi.org/10.1016/s0039-6028(97)00123-4

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