Local methylthiolate adsorption geometry on Au(111) from photoemission core-level shifts

Local methylthiolate adsorption geometry on Au(111) from photoemission core-level shifts

The local adsorption structure of methylthiolate in the ordered Au(111)-(sqrt[3]xsqrt[3])R30 degrees phase has been investigated using core-level-shift measurements of the surface and bulk components of the Au 4f(7/2) photoelectron binding energy. The amplitude ratio of the core-level-shift componen...

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Veröffentlicht in:Physical review letters 2009-03, Vol.102 (12), p.126101-126101, Article 126101
Hauptverfasser: Chaudhuri, A, Lerotholi, T J, Jackson, D C, Woodruff, D P, Dhanak, V
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container_title Physical review letters
container_volume 102
creator Chaudhuri, A
Lerotholi, T J
Jackson, D C
Woodruff, D P
Dhanak, V
description The local adsorption structure of methylthiolate in the ordered Au(111)-(sqrt[3]xsqrt[3])R30 degrees phase has been investigated using core-level-shift measurements of the surface and bulk components of the Au 4f(7/2) photoelectron binding energy. The amplitude ratio of the core-level-shift components associated with surface Au atoms that are, and are not, bonded to the thiolate is found to be compatible only with the previously proposed Au-adatom-monothiolate moiety in which the thiolate is bonded atop Au adatoms in hollow sites, and not on an unreconstructed surface, or in Au-adatom-dithiolate species.
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title Local methylthiolate adsorption geometry on Au(111) from photoemission core-level shifts
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