ELECTRONIC-STRUCTURE OF CS-GRAPHITE SURFACE STUDIED BY AUGER-SPECTROSCOPY

The electronic properties of Cs-covered graphite surfaces at different Cs concentrations were studied by high resolution Auger-electron spec troscopy. The density of valence states (DOVS) was obtained by the sel f-deconvolution method. The band structure of Cs-graphite compounds wa s calculated by the Green function method. Two different models of the Cs-graphite interaction for two stages of intercalation were proposed . Characteristics of the Cs-graphite interaction were obtained from a comparison of experimental and calculated DOVS.