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Abstract

Appearance-potential spectra of heavy-fermion systems are analysed in the frame of the Gunnarsson-Schönhammer approach for the Anderson-impurity model. This procedure has been used successfully to describe a wide variety of one-particle spectroscopies of 4f systems. This paper presents a generalisation of the Gunnarsson-Schönhammer approach for two-particle response functions, measured in appearance-potential spectroscopy. Calculations and experiments are presented for CeNi(5) and CePd(3). It appears that the first term in the 1/N expansion already gives strikingly good agreement with the experimental data, and the Gunnarsson-Schönhammer approach describes two-particle response functions as reliably as those of one-particle spectra.

Additional information

Authors: VALASEK P, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);VON DER LINDEN W, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);DOSE V, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: Journal of Electron Spectroscopy and Related Phenomena, Vol. 72 (1995) pp. 229-234; Physical Review B, Vol. 51 (1995) No. 12, pp. 7471-7475
Record Number: 199510791 / Last updated on: 1995-07-17
Category: PUBLICATION
Original language: en
Available languages: en