We present a combined experimental (STM/scanning tunneling spectroscopy) and theoretical (density functional theory) study on the deposition of Au and Pd metal atoms on FeO/Pt(111) ultrathin films. We show that while the Pd atoms are only slightly oxidized, the Au atoms form positive ions upon deposition, at variance to a charge transfer into the Au atoms as observed for MgO/Ag(100). The modulation of the adsorption properties within the surface Moiré cell and the charging induce the formation a self-assembled array of gold adatoms on FeO/Pt(111), whereas Pd atoms are randomly distributed.

Giordano, L., Pacchioni, G., Goniakowski, J., Nilius, N., Rienks, E., Freund, H. (2008). Charging of metal adatoms on ultrathin oxide films: Au and Pd on FeO/Pt(111). PHYSICAL REVIEW LETTERS, 101(2), 1-4 [10.1103/PhysRevLett.101.026102].

Charging of metal adatoms on ultrathin oxide films: Au and Pd on FeO/Pt(111)

Giordano, L;Pacchioni, G;
2008

Abstract

We present a combined experimental (STM/scanning tunneling spectroscopy) and theoretical (density functional theory) study on the deposition of Au and Pd metal atoms on FeO/Pt(111) ultrathin films. We show that while the Pd atoms are only slightly oxidized, the Au atoms form positive ions upon deposition, at variance to a charge transfer into the Au atoms as observed for MgO/Ag(100). The modulation of the adsorption properties within the surface Moiré cell and the charging induce the formation a self-assembled array of gold adatoms on FeO/Pt(111), whereas Pd atoms are randomly distributed.
Articolo in rivista - Articolo scientifico
film sottili, ossidi, metalli supportati
English
2008
101
2
1
4
026102
none
Giordano, L., Pacchioni, G., Goniakowski, J., Nilius, N., Rienks, E., Freund, H. (2008). Charging of metal adatoms on ultrathin oxide films: Au and Pd on FeO/Pt(111). PHYSICAL REVIEW LETTERS, 101(2), 1-4 [10.1103/PhysRevLett.101.026102].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/1255
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