THE STRUCTURE OF THE AG(110)-C(6X2)O SURFACE DETERMINED WITH LEIS

By means of low-energy ion scattering (LEIS), combined with time-of-fl ight (TOF) measurements, we studied the oxygen induced Ag(110)-c(6 x 2 )O surface. The surface was bombarded with 6 keV Ar+ ions. The coordin ates of the O and Ag atoms were determined by comparing azimuthal scan s for recoiled O with Monte Carlo computer simulations. The structure of the Ag(110)-c(6 x 2)O surface appears to be similar to the c(6 x 2) O phase of Cu(110). A general picture evolves in which both the p(2 x 1) (O coverage = 1/2 monolayer) and c(6 x 2) (O coverage = 2/3 monolay er) reconstructed surfaces of Ag(110) and Cu(110) exhibit the same geo metric structure upon adsorption of oxygen.