Structure determination of graphitic carbon on Cu(110) by means of surface extended energy loss fine structure

Abstract

Extended energy loss fine structures (EELFS) have been detected in the reflection mode above the K edge of graphitic carbon chemisorbed on a copper (110) single crystal. To explain the features of the radial distribution function of the EELFS signal a model is proposed for the geometrical structure of graphitic C on Cu(110) which reproduces well the experimental data. According to the model the graphitic carbon overlayer is positioned 1.275 Å above the Cu(110) surface and the bond length between carbon atoms in the basal plane of the hexagonal lattice turns out to be 1.47 Å.