Journal
PHYSICAL REVIEW LETTERS
Volume 95, Issue 6, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.95.066101
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The spatial distribution of single Au atoms on a thin FeO film has been investigated by low-temperature scanning tunneling microscopy and spectroscopy. The adatoms preferentially adsorb on distinct sites of the Moire cell formed by the oxide layer and the Pt(111) support and arrange into a well-ordered hexagonal superlattice with 25 A lattice constant. The self-organization is the consequence of an inhomogeneous surface potential within the FeO Moire cell and substantial electrostatic repulsion between the adatoms.
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