Resonant photoemission study of the 4f spectral function of cerium in Ce/Fe(100) interfaces

Journal Article · Sat Nov 01 00:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.12054· OSTI ID:564901

Witkowski, N; Bertran, F; Gourieux, T; Kierren, B; Malterre, D ^[1]; Panaccione, G ^[2]

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1. Laboratoire de Physique des Materiaux, Universite Henri Poincare, Nancy I, Boite Postale 239, F-54506 Vandoeuvre-les-Nancy (France)
2. Laboratoire pour lUtilisation du Rayonnement Electromagnetique, Universite Paris-Sud, F-91405 Orsay Cedex (France)

In this paper, we present a resonant photoemission study of the cerium 4f spectral function in Ce/Fe(100) interfaces. By covering cerium ultrathin films with lanthanum, we completely suppress the surface contribution of the spectra. Then we show that the cerium atoms at the interface are in an intermediate valent state, whereas the f{sup 1} configuration is stabilized in the top layer. This method allows us to obtain the genuine 4f spectral function of the interface, and could be extended to a study of Ce-based compounds. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 564901
• Journal Information: Physical Review, B: Condensed Matter, Vol. 56, Issue 19; Other Information: PBD: Nov 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM
SPECTRAL FUNCTIONS
PHOTOEMISSION
INTERFACES
IRON
THIN FILMS
ELECTRONIC STRUCTURE
F STATES