J. Phys. IV France 7 (1997) C2-369-C2-370
3D Level Resonant Photoemission in Ce and La CompoundsD. Chandesris1, J. Vogel1, 2, H. Magnan1, 3 and P. Le Fèvre1, 4
1 LURE, Université Paris Sud, 91405 Orsay, France
2 Laboratoire Louis Neel, 17 avenue des Martyrs, BP. 166X, 38042 Grenoble, France
3 SRSIM, CEA, Centre d'Études de Saclay, 91191 Gif-sur-Yvette France
4 SRSIM, CEA, Centre d'Études de Saclay, 91191 Gif-sur-Yvette, France
We have measured the 3d -photoemission of La and Ce at photon energies around their L3 absorption edges in LaPd and CePd. We have observed a modification of the photoemitted intensity of these deep core levels due to quantum interference between the direct photoemission channel and de-excitation of the core excited state, as first described by Fano. We discuss, in a qualitative way, the observed differences between La and Ce, as well as the possible role of quadrupolar transitions to the resonant process.
© EDP Sciences 1997