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The local adsorption site of methylthiolate on Au(111): bridge or atop?
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Jackson, D. C., Chaudhuri, Anindita, Lerotholi, T. J., Woodruff, D. P., Jones, Robert G. and Dhanak, V. R. (2009) The local adsorption site of methylthiolate on Au(111): bridge or atop? Surface Science, Vol.603 (No.5). pp. 807-813. doi:10.1016/j.susc.2009.01.022 ISSN 0039-6028.
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Official URL: http://dx.doi.org/10.1016/j.susc.2009.01.022
Abstract
Measurements of the local adsorption geometry of the S head-group atom in the Au(1 1 1)(root 3 x /3)R30 degrees-CH3S surface have been made using normal incidence X-ray standing waves (NIXSW) and S Is scanned-energy mode photoelectrom 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 angstrom, 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. (c) 2009 Elsevier B.V. All rights reserved.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Chemisorption, Diffraction, Self-assembly (Chemistry), Thiols, Gold | ||||
| Journal or Publication Title: | Surface Science | ||||
| Publisher: | Elsevier Science BV | ||||
| ISSN: | 0039-6028 | ||||
| Official Date: | 1 March 2009 | ||||
| Dates: |
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| Volume: | Vol.603 | ||||
| Number: | No.5 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | pp. 807-813 | ||||
| DOI: | 10.1016/j.susc.2009.01.022 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) |
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