X-ray-absorption spectroscopy in CoSi2 and NiSi2: Experiment and theory

P. Lerch, T. Jarlborg, V. Codazzi, G. Loupias, and A. M. Flank
Phys. Rev. B 45, 11481 – Published 15 May 1992
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Abstract

This paper presents an experimental and theoretical study of x-ray-absorption spectroscopy near the edge. We measured K edges for all atom types and L2,3 edges for Co and Ni. Theoretical spectra from a linear-muffin-tin-orbitals band-structure calculation are shown. The effect of the core hole on threshold energies and absorption spectra has been studied. We also show the distribution of the photoelectron in the elementary cell. Threshold energies obtained by using the difference-self-consistent-field method are compared to experimental values. Polarization energies, due to rearrangement of the core orbitals, have been estimated for the different core holes.

  • Received 12 December 1991

DOI:https://doi.org/10.1103/PhysRevB.45.11481

©1992 American Physical Society

Authors & Affiliations

P. Lerch and T. Jarlborg

  • De´partement de Physique de La Matie`re Condense´e, Universite´ de Gene`ve, 24 Quai Ernest-Ansermet, CH-1211 Gene`ve 4, Switzerland

V. Codazzi and G. Loupias

  • Laboratoire de Mine´ralogie-Cristallographie, Universite´ Paris VI et VII, 4 place Jussieu, 75252 Paris CEDEX 05, France

A. M. Flank

  • Laboratoire d’Utilisation du Rayonnement Electromagne´tique, Universite´ de Paris(enSud, Ba^timent 209c, 91405 Orsay CEDEX, France

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Vol. 45, Iss. 20 — 15 May 1992

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