Self-organization of gold atoms on a polar FeO(111) surface.

نویسندگان

  • Niklas Nilius
  • Emile D L Rienks
  • Hans-Peter Rust
  • Hans-Joachim Freund
چکیده

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 Moiré cell formed by the oxide layer and the Pt(111) support and arrange into a well-ordered hexagonal superlattice with 25 angstroms lattice constant. The self-organization is the consequence of an inhomogeneous surface potential within the FeO Moiré cell and substantial electrostatic repulsion between the adatoms.

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عنوان ژورنال:
  • Physical review letters

دوره 95 6  شماره 

صفحات  -

تاریخ انتشار 2005