Control of the charge state of metal atoms on thin MgO films.

Full Abstract

The arrangement of single gold and palladium atoms deposited on the surface of a 3 monolayer thin film of MgO was investigated using low-temperature scanning tunneling microscopy. While Pd atoms are arranged in a random fashion, Au forms an ordered array on the surface. The long-range ordering as well as the scanning tunneling microscopy appearance of single Au atoms on a 3 monolayer thin MgO film can be explained by partial charge transfer from the substrate to Au atoms as predicted recently by density functional theory calculations [Phys. Rev. Lett. 94, 226104 (2005)10.1103/PhysRevLett.94.226104]. In contrast with that, Au atoms on a thick film were found to be essentially neutral.

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Author information

Author/s: Sterrer, Martin (M); Risse, Thomas (T); Martinez Pozzoni, Umberto (U); Giordano, Livia (L); Heyde, Markus (M); Rust, Hans-Peter (HP); Pacchioni, Gianfranco (G); Freund, Hans-Joachim (HJ);

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: 2007-Mar; vol 98 (issue 9) : pp 096107

Dates: Created 2007/03/15; Completed 2007/07/05;

PMID: 17359179, status: PubMed-not-MEDLINE (last retrieval date: 12/26/2008)

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