Photoemission and ion scattering study of Ce/Ni(110) and Ce/Cu(100) systems

We have studied the electronic structures of Ce/Ni(110) and Ce/Cu(100) systems by the 4d→4f resonant photoemission using synchrotron radiation and the Ce 3d core-level x-ray photoemission. We also investigated the distribution of component atoms in surface layers of Ce/Ni(100) system by the medium-energy ion scattering. In Ce/Ni(110) system, strength of the hybridization between 4f and conduction electrons (f-c hybridization) significantly depends on the Ce concentration in the surface layers. In Ce/Cu(110) system, the f-c hybridization is very weak and insensitive to the Ce concentration in the surface layers.