Issue J. Phys. IV France Volume 04, Number C9, Novembre 1994 Proceedings of the European Symposium on Frontiers in Science and Technology with Synchrotron Radiation Page(s) C9-127 - C9-130 DOI 10.1051/jp4:1994918

Proceedings of the European Symposium on Frontiers in Science and Technology with Synchrotron Radiation

J. Phys. IV France 04 (1994) C9-127-C9-130
DOI: 10.1051/jp4:1994918

Core-level XPS spectra of supported 3d-metal ultrathin layers : experimental and theoretical studies

G. Garreau¹, V. Schorsch¹, E. Beaurepaire¹, J.C. Parlebas¹, O. Speder² and P. Rennert<sup>2

1</sup>  IPCMS-GEMME, UM 46 du CNRS, 23 rue du Loess, BP. 20 CR, 67037 Strasbourg, France
²  Dept. of Physics, Martin Luther Univ., Friedeman Bach Pl. 6, 06099 Halle, Germany

Abstract
In order to discuss the relation between the core level c-XPS spectra and the local electronic and magnetic properties of supported 3d transition metal atoms, we incorporate the various Coulomb and exchange interactions into a generalized impurity Anderson Hamiltonian, both in the initial state (U_dd, J_dd) and final state (U_dc, J_dc) of the c-XPS process. Then we discuss recent experimental 3s-XPS spectra of Fe and Co ultrathin-layers upon Cr(100) as well as V clusters upon graphite in terms of the two limits of the preceding Hamiltonian : (1) the exchange splitting limit (J_dc) and (2) the dielectric relaxation limit (U_dc).

© EDP Sciences 1994

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