Impurity-induced diffusion bias in epitaxial growth
Condensed Matter
2009-10-28 v1
Abstract
We introduce two models for the action of impurities in epitaxial growth. In the first, the interaction between the diffusing adatoms and the impurities is ``barrier''-like and, in the second, it is ``trap''-like. For the barrier model, we find a symmetry breaking effect that leads to an overall down-hill current. As expected, such a current produces Edwards-Wilkinson scaling. For the trap model, no symmetry breaking occurs and the scaling behavior appears to be of the conserved-KPZ type.
Cite
@article{arxiv.cond-mat/9609087,
title = {Impurity-induced diffusion bias in epitaxial growth},
author = {Luis A. Nunes Amaral and Joachim Krug},
journal= {arXiv preprint arXiv:cond-mat/9609087},
year = {2009}
}
Comments
5 pages(with the 5 figures), latex, revtex3.0, epsf, rotate, multicol