Understanding mixed valent materials: Effects of dynamical core-hole screening in high-pressure x-ray spectroscopy

C. Dallera, O. Wessely, M. Colarieti-Tosti, O. Eriksson, R. Ahuja, B. Johansson, M. I. Katsnelson, E. Annese, J. P. Rueff, G. Vankó, L. Braicovich, M. Grioni

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Changes in the electronic structure of Yb, a material whose valence is modified under pressure, are observed with remarkable detail in x-ray absorption and emission data measured between ambient conditions and 20 GPa. These changes are reproduced by a theory that essentially does not rely on experimental parameters, and includes dynamical core-hole screening. From the combined experimental and theoretical data we can firmly establish on a quantitative level how the valency of an intermediate valence material is modified by pressure. In metallic Yb it increases from 2 to 2.55±0.05 between 0 and 20 GPa.

Original languageEnglish
Article number081101
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number8
DOIs
Publication statusPublished - 2006

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x ray spectroscopy
Screening
screening
Spectroscopy
valence
X rays
x ray absorption
Electronic structure
electronic structure

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Understanding mixed valent materials : Effects of dynamical core-hole screening in high-pressure x-ray spectroscopy. / Dallera, C.; Wessely, O.; Colarieti-Tosti, M.; Eriksson, O.; Ahuja, R.; Johansson, B.; Katsnelson, M. I.; Annese, E.; Rueff, J. P.; Vankó, G.; Braicovich, L.; Grioni, M.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 74, No. 8, 081101, 2006.

Research output: Contribution to journalArticle

Dallera, C, Wessely, O, Colarieti-Tosti, M, Eriksson, O, Ahuja, R, Johansson, B, Katsnelson, MI, Annese, E, Rueff, JP, Vankó, G, Braicovich, L & Grioni, M 2006, 'Understanding mixed valent materials: Effects of dynamical core-hole screening in high-pressure x-ray spectroscopy', Physical Review B - Condensed Matter and Materials Physics, vol. 74, no. 8, 081101. https://doi.org/10.1103/PhysRevB.74.081101
Dallera, C. ; Wessely, O. ; Colarieti-Tosti, M. ; Eriksson, O. ; Ahuja, R. ; Johansson, B. ; Katsnelson, M. I. ; Annese, E. ; Rueff, J. P. ; Vankó, G. ; Braicovich, L. ; Grioni, M. / Understanding mixed valent materials : Effects of dynamical core-hole screening in high-pressure x-ray spectroscopy. In: Physical Review B - Condensed Matter and Materials Physics. 2006 ; Vol. 74, No. 8.
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