Methylthiolate-induced reconstruction of Ag(111): A medium energy ion scattering study

Parkinson, G.S., Hentz, A., Quinn, P.D., Window, A.J., Woodruff, D.P., Bailey, Paul and Noakes, T.C.Q. (2007) Methylthiolate-induced reconstruction of Ag(111): A medium energy ion scattering study. Surface Science, 601 (1). pp. 50-57. ISSN 0039-6028

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Abstract

Medium energy ion scattering (MEIS), using 100 keV H+ incident ions, has been used to investigate the structure of the Ag(1 1 1)(√7 × √7)R19° –CH3S surface phase. The results provide the first direct evidence that this structure does involve substantial reconstruction of the Ag surface layer. The measured absolute scattered ion yields and blocking curves are in generally good agreement with a specific structural model of the surface based on a reconstructed layer containing 3/7 ML Ag atoms, previously suggested on the basis of scanning tunnelling microscopy (STM) and normal incidence X-ray standing wave (NIXSW) studies. However, the MEIS data indicate that any rumpling of the thiolate layer, is small, and probably ⩽0.2 Å. This value is smaller than the amplitude suggested in the STM and NIXSW studies, but could be entirely consistent with the earlier experimental data.

Item Type:	Article
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Schools:	School of Applied Sciences
Related URLs:	Author
Depositing User:	Sharon Beastall
Date Deposited:	12 Sep 2012 12:18
Last Modified:	12 Sep 2012 12:18
URI:	http://eprints.hud.ac.uk/id/eprint/14868

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