Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5424111 | Surface Science | 2009 | 7 Pages |
Abstract
Measurements of the local adsorption geometry of the S head-group atom in the Au(1 1 1)(â3 Ã â3)R30°-CH3S surface have been made using normal incidence X-ray standing waves (NIXSW) and S 1s scanned-energy mode photoelectron diffraction on the same surface preparations. The results confirm that the local adsorption site is atop an Au atom in a bulk-continuation site with a S-Au bondlength of 2.42 ± 0.02 Ã
, and that there can be no significant fraction of coadsorbed bridging species as recently proposed in a combined molecular dynamics/experimental study by Mazzarello et al. [R. Mazzarello, A. Cossaro, A. Verdini, R. Rousseau, L. Casalis, M.F. Danisman, L. Floreano, S. Scandolo, A. Morgante, G. Scoles, Phys. Rev. Lett. 98 (2007) 016102]. The results do not, however, clearly distinguish the different local reconstruction (adatom) models proposed for this surface.
Related Topics
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Authors
D.C. Jackson, A. Chaudhuri, T.J. Lerotholi, D.P. Woodruff, Robert G. Jones, V.R. Dhanak,