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| Research article summary (published 12 Apr 2006): |
Binding of single gold atoms on thin MgO(001) films.
Full Abstract
In the present Letter the first electron paramagnetic resonance spectra of single metal atoms on a single crystalline oxide surface are presented. For Au atoms on a MgO(001) film investigated here an analysis of the angular dependent resonance positions and the hyperfine coupling to (17)O shows that the atoms are bound on top of oxygen ions on the terrace of the film. This result is in perfect agreement with scanning tunneling microscopy measurements at 5 K presented here. The measured hyperfine matrix components allow an experimental verification of the theoretically proposed binding mechanism of Au atoms on MgO. In particular, the large reduction of the isotropic hyperfine coupling constant of supported Au as compared to free atoms is not due to a charge transfer at the interface but a hybridization of orbitals and a resulting polarization of the unpaired electron.
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Author information
Author/s: Yulikov, Maxim (M); Sterrer, Martin (M); Heyde, Markus (M); Rust, Hans-Peter (HP); Risse, Thomas (T); Freund, Hans-Joachim (HJ); Pacchioni, Gianfranco (G); Scagnelli, Andrea (A);
Affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
Journal and publication information
Publication Type: Journal Article
Journal: Physical review letters (Phys Rev Lett), published in United States. (Language: eng)
Reference: 2006-Apr; vol 96 (issue 14) : pp 146804
Dates: Created 2006/05/22; Completed 2006/07/20;
PMID: 16712109, status: PubMed-not-MEDLINE (last retrieval date: 12/26/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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