3D Level Resonant Photoemission in Ce and La Compounds

D. Chandesris; J. Vogel; H. Magnan; P. Le Fèvre

doi:doi:10.1051/jp4/1997020

Issue		J. Phys. IV France Volume 7, Number C2, Avril 1997 Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure


Page(s)		C2-369 - C2-370
DOI		https://doi.org/10.1051/jp4/1997020

Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure

J. Phys. IV France 7 (1997) C2-369-C2-370
DOI: 10.1051/jp4/1997020

3D Level Resonant Photoemission in Ce and La Compounds

D. Chandesris¹, J. Vogel^{1, 2}, H. Magnan^{1, 3} and P. Le Fèvre^{1, 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

Abstract
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.