Current-Induced Step Bending Instability on Vicinal Surfaces
arXiv:cond-mat/9804179 · doi:10.1103/PhysRevLett.81.2743
Abstract
We model an apparent instability seen in recent experiments on current induced step bunching on Si(111) surfaces using a generalized 2D BCF model, where adatoms have a diffusion bias parallel to the step edges and there is an attachment barrier at the step edge. We find a new linear instability with novel step patterns. Monte Carlo simulations on a solid-on-solid model are used to study the instability beyond the linear regime.
4 pages, 4 figures
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