Experimental demonstrations of direct adsorbate site identification using photoelectron diffraction

Abstract

A recently proposed direct method has been applied to the analysis of experimental backscattering photoelectron diffraction data for the three adsorption systems Cu{110}-CO, Cu{111}-${\mathrm{OCH}}_3$, and Cu{111}-${\mathrm{C}}_2$ ${\mathrm{H}}_2$. The local adsorption sites are determined through the identification of the nearest-neighbor substrate atom directions which can be determined with an accuracy of ±5°.