Using low-energy ion back-scattering with the detection of neutrals in combination with scanning tunnelling microscopy and low-energy electron diffraction, an investigation was made of the (110) surface upon exposure to nitrogen. Nitrogen was found to induce a Cu-surface segregation and a surface reconstruction to a c(2 x 4) pattern. A model for this reconstruction was suggested which was characterized by additional copper double rows in <110> azimuth with nitrogen atoms in every second bridge position. The nitrogen atoms in neighbouring double rows were shifted by one atomic spacing with respect to one another.

Nitrogen-Induced Reconstruction of the Cu3Au(110) Surface. K.Morgenstern, M.Voetz, H.Niehus: Physical Review B, 1996, 54, 17870-6