Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9830122 | Journal of Crystal Growth | 2005 | 9 Pages |
Abstract
We report on step bunching and meandering dynamics on vicinal surfaces during MBE growth. We list four generic meandering scenarios during MBE growth: (i) when adatom desorption is significant, spatio-temporal chaos is found. When desorption is negligible three regimes are found; (ii) meandering with a wavelength which is frozen from the first stages of the instability, but whose amplitude diverges as a power law (t1/2); (iii) endless coarsening in the presence of elastic interactions between the steps; (iv) interrupted coarsening in presence of anisotropy. In the case of step bunching, we analyze two scenarios: (i) when desorption is important, ordered bunches appear. (ii) In the opposite limit, bunches separate, and wide terraces appear.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
O. Pierre-Louis, G. Danker, J. Chang, K. Kassner, C. Misbah,