The Cu3Au(110) surface was investigated by 180° low energy ion scattering spectroscopy in impact collision mode with the detection of noble gas neutrals and low energy electron diffraction. Oxygen adsorption on the clean surface at room temperature led to a (2 x 1) reconstruction. The reconstructed surface no longer contains gold in its topmost layer, but instead copper and oxygen atoms. The surface was composed of CuO-CuO-Cu chains in the <001> direction. In the <110> direction every second row was missing. Evidence for this “added-row” model will be given.

Reconstruction of the Oxygen Covered Cu3Au(110) Surface Investigated by Low Energy Ion Back Scattering and LEED. K.Morgenstern, H.Niehus, G.Comsa: Surface Science, 1995, 338[1-3], 1-10