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Counting electrons transferred through a thin alumina film into Au chains

Nilius, N; Ganduglia-Pirovano, MV; Brazdova, V; Kulawik, M; Sauer, J; Freund, HJ; (2008) Counting electrons transferred through a thin alumina film into Au chains. PHYS REV LETT , 100 (9) , Article 096802. 10.1103/PhysRevLett.100.096802. Green open access

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Abstract

Low-temperature STM measurements combined with density functional theory calculations are employed to study the adsorption of gold on alumina/NiAl(110). The binding of Au monomers involves breaking of an oxide Al-O bond below the adatom and stabilizing the hence undercoordinated O ion by forming a new bond to an Al atom in the NiAl. The adsorption implies negative charging of the adatom. The linear arrangement of favorable binding sites induces the self-organization of Au atoms into chains. For every ad-chain, the number of transfer electrons from the support is determined by analyzing the node structure of the corresponding highest occupied molecular orbital.

Type: Article
Title: Counting electrons transferred through a thin alumina film into Au chains
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.100.096802
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.100.096802
Language: English
Additional information: © 2008 The American Physical Society
Keywords: OXIDE-FILM, ATOMS, GOLD, ADSORPTION, SURFACES, CO
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/150059
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