  Strong angle-dependent intensity variations of the Fermi-level feature are
observed in 4d - 4f resonant photoemission spectra of CePd$_3$(111), that
reveal the periodicity of the lattice and largest intensity close to the Gamma
points of the surface Brillouin zone. In the framework of a simplified periodic
Anderson model the phenomena may quantitatively be described by a wave-vector
dependence of the electron hopping matrix elements caused by Fermi-level
crossings of non-4f-derived energy bands.
