Current-Induced Step Bending Instability on Vicinal Surfaces

Details Current-Induced Step Bending Instability on Vicinal Surfaces Current-Induced Step Bending Instability on Vicinal Surfaces

1998-04-16

arxiv.org/abs/cond-mat/9804179v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.81.2743

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.

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