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Article Dans Une Revue Physical Review Letters Année : 2006

Effect of Step Stiffness and Diffusion Anisotropy on the Meandering of a Growing Vicinal Surface

Résumé

We study the step meandering instability on a surface characterized by the alternation of terraces with different properties, as in the case of Si(001). The interplay between diffusion anisotropy and step stiffness induces a finite wavelength instability corresponding to a meandering mode. The instability sets in beyond a threshold value which depends on the relative magnitudes of the destabilizing flux and the stabilizing stiffness difference. The meander dynamics is governed by the conserved Kuramoto-Sivashinsky equation, which display spatiotemporal coarsening.
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Dates et versions

hal-00082493 , version 1 (28-06-2006)

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Thomas Frisch, Alberto Verga. Effect of Step Stiffness and Diffusion Anisotropy on the Meandering of a Growing Vicinal Surface. Physical Review Letters, 2006, 96, pp.art. 166104. ⟨10.1103/PhysRevLett.96.166104⟩. ⟨hal-00082493⟩
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