Singular response to a dopant of an evaporating crystal surface
Materials Science
2012-10-25 v2
Abstract
Moving crystal surfaces can undergo step-bunching instabilities, when subject to an electric current. We show analytically that an infinitesimal quantity of a dopant may invert the stability, whatever the sign of the current. Our study is relevant for experimental results [S. S. Kosolobov et al., JETP Lett. 81, 117 (2005)] on an evaporating Si(111) surface, which show a singular response to Au doping, whose density distribution is related to inhomogeneous Si diffusion.
Cite
@article{arxiv.1204.5957,
title = {Singular response to a dopant of an evaporating crystal surface},
author = {Vladislav Popkov and Paolo Politi},
journal= {arXiv preprint arXiv:1204.5957},
year = {2012}
}
Comments
5 pages. To be published in PRB-Rapid Communications