Over, Herbert; Bludau, Horst; Skottke, Maria; Moritz, Wolfgang; Ertl, Gerhard
Low-energy electron diffraction analysis of the structure of a Cs-O/Ru(0001) coadsorbate phase.
In: Physical Review B, Vol. 46, Nr. 7: S. 4360-4363
The structure of the (√3 × √3 )R30° overlayer formed by coadsorption of Cs and O atoms (θCs=θ0=0.33) on a Ru(0001) surface was determined by low-energy electron diffraction. Both adsorbates occupy hcp-type hollow sites. If compared with the structures of the respective pure adsorbate phases, the bond lengths are modified in a way consistent with an effective transfer of electronic charge from Cs to O.