Highly site-specific H2 adsorption on vicinal Si(001) surfaces
Condensed Matter
2009-10-31 v1
Abstract
Experimental and theoretical results for the dissociative adsorption of H_2 on vicinal Si(001) surfaces are presented. Using optical second-harmonic generation, sticking probabilities at the step sites are found to exceed those on the terraces by up to six orders of magnitude. Density functional theory calculations indicate the presence of direct adsorption pathways for monohydride formation but with a dramatically lowered barrier for step adsorption due to an efficient rehybridization of dangling orbitals.
Cite
@article{arxiv.cond-mat/9811241,
title = {Highly site-specific H2 adsorption on vicinal Si(001) surfaces},
author = {P. Kratzer and E. Pehlke and M. Scheffler and M. B. Raschke and U. Hofer},
journal= {arXiv preprint arXiv:cond-mat/9811241},
year = {2009}
}
Comments
5 pages, 4 figures, submitted to Phys. Rev. Lett. (1998). Other related publications can be found at http://www.fhi-berlin.mpg.de/th/paper.html