The image states for thin Ag layers on Au(111) have been studied with
two-photon photoemission. The energies of the states show the behavior
characteristic for a layer-by-layer growth of large terraces with the
ir characteristic local work function. Image states with rather large
linewidths are observed at energies outside the band gap of the projec
ted bulk band structure. The identification of the states is complicat
ed by the dominating signal from the occupied surface state.