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The European Physical Journal B
ISSN: 1434-6028 (printed version)
ISSN: 1434-6036 (electronic version)
Abstract Volume 2 Issue 4 (1998) pp 463-467
High-resolution resonant photoemission study of the 4f states in a typical Kondo system: CePd$_{\bf 3}$
M. Zacchigna (1), J. Almeida (1), I. Vobornik (1), G. Margaritondo (1), D. Malterre (2), B. Malaman (2), M. Grioni (1) (a)
(1) Institut de Physique Appliquée, École Polytechnique Fédérale, 1015 Lausanne, Switzerland
(2) Université H. Poincaré, 54506 Vandoeuvre, France
Received: 13 October 1997 / Accepted: 21 January 1998
Abstract: We exploited resonant photoemission at the Ce $\rm 4d\rightarrow 4f$ absorption edge to investigate the Ce 4f states in $\rm CePd_{3}$. High resolution spectra reveal, near the Fermi level, the characteristic fine structure of intermediate valence Ce compounds. The spectral lineshape is consistent with the typical "Kondo" character of CePd, but the prominent $({\rm f}^{0})$ ionization peak is found at the unusually low binding energy of 1 eV. We briefly discuss the implications of these observations.
PACS. 71.28.+d Narrow-band systems; intermediate-valence solids - 78.90.+t Other topics in optical properties, condensed matter spectroscopy and other interactions of particles and radiation with condensed matter - 79.60.-i Photoemission and photoelectron spectra
(a) email: grioni@dpmail.epfl.ch
Online publication: June 2, 1998
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