ANGULAR RESOLVED PHOTOEMISSION AND THE BAND-STRUCTURE OF SOLIDS

Current models used to described angular resolved photoemission data are discussed. Emphasis is placed on the energies of structure in the spectrum and its relationship to the bulk band structure. Taking the lead salts (PbS, PbSe, PbTe) as an example a detailed comparison between measured and calculated spectra is given using time reversed LEED functions to describe the final state. On the basis of this comparison criteria are discussed that allow the application of simpler models for the interpretation of angular resolved photoemission. Such models include the direct, k-conserving model and the model of complete neglect of k conservation as well as the use of free electron like final states. © 1979.