Wave-vector dependent intensity variations of the Kondo peak in   photoemission from CePd$_3$
  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. 
S. Danzenb\"acher, Yu. Kucherenko, M. Heber, D.V. Vyalikh, S.L.   Molodtsov, V.D.P. Servedio, and C. Laubschat