ABSTRACT
The ultimate size of solids does exert a substantial influence on a compound’s electronic structure if the solid’s linear dimensions are large compared to interatomic distance, i.e. if the number of border atoms is small as compared to the number of atoms inside the solid. In fact, a multitude of rearrangements of the surface layer, depending on the nature of the surface and the monocrystal’s overall structure, are dealt with in literature. A classification of this type makes sense for solids of the type Si, GaAs, and others where it is possible to single out localized bonds between neighbouring atoms. The use of a roughly similar procedure enabled the authors of only to divide the valence band spectra of the first surface layer of Au and the rest of the sample but also to discover experimentally for the first time two components of the 4f inner level line of Au at extremely small photoelectron exit angles.
