Institut für Grenzflächenforschung and Vakuumphysik, KFA Jülich, Postfach 1913, W-5170, Jülich, Germany
Abstract:
The 180° low energy impact collision ion scattering spectroscopy with detection of noble gas neutrals (180°-NICISS) has been used to investigate the nitrogen saturated Cu(110) surface, which is known to exhibit a (2 × 3) diffraction pattern. The nitrogen induced (2 × 3) phase appears to be the result of a surface reconstruction of a new missing row type, in which every third100 row of Cu atoms of the first layer is missing. The 180° NICISS patterns further indicate within an accuracy of 0.1–0.2 Å, that the double periodicity in the 1
0] direction is not due to the reconstruction of the Cu surface. Its origin has to be found in the arrangement of the N atoms.