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Electronic-structure investigation of CeB6 by means of soft-x-ray scattering
Uppsala University.ORCID iD: 0000-0002-0317-0190
Uppsala University.
Uppsala University.
Uppsala University.
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2001 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 63, no 075101Article in journal (Refereed) Published
Abstract [en]

The electronic structure of the heavy fermion compound CeB6 is probed by resonant inelastic soft-x-ray scattering using photon energies across the Ce 3d and 4d absorption edges. The hybridization between the localized 4f orbitals and the delocalized valence-band states is studied by identifying the different spectral contributions from inelastic Raman scattering and normal fluorescence. Pronounced energy-loss structures are observed below the elastic peak at both the 3d and 4d thresholds. The origin and character of the inelastic scattering structures are discussed in terms of charge-transfer excitations in connection to the dipole allowed transitions with 4f character. Calculations within the single-impurity Anderson model with full multiplet effects are found to yield consistent spectral functions to the experimental data.

Place, publisher, year, edition, pages
2001. Vol. 63, no 075101
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-17467DOI: 10.1103/PhysRevB.63.075101OAI: diva2:209598

Original Publication:Martin Magnuson, S. M. Butorin, J.-H. Guo, A. Agui, J. Nordgren, H. Ogasawara, A. Kotani, T. Takahashi and S. Kunii, Electronic-structure investigation of CeB6 by means of soft-x-ray scattering, 2001, Physical Review B. Condensed Matter and Materials Physics, (63), 075101. American Physical Society

Available from: 2009-03-26 Created: 2009-03-25 Last updated: 2013-10-02Bibliographically approved
In thesis
1. Electronic Structure Studies Using Resonant X-ray and Photemission Spectroscopy
Open this publication in new window or tab >>Electronic Structure Studies Using Resonant X-ray and Photemission Spectroscopy
1999 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis addresses the electronic structure of molecules and solids using resonant X-ray emission and photoemission spectroscopy. The use of monochromatic synchrotron radiation and the improved performance of the instrumentation have opened up the possibility of detailed analyses of the response of the electronic systems under interaction with X-rays. The experimental studies are accompanied by numerical ab initio calculations in the formalism of resonant inelastic scattering. The energy selectivity has made it possible for the first time to study how the chemical bonds in a molecule break up during resonant inelastic X-ray scattering. In the conjugated polymer systems, the element selectivity of the X-ray emission process made it possible to probe the different atomic elements separately. The X-ray emission technique proved to be useful for extracting isomeric information, and for measuring the change in the valence levels at different degrees of doping. In this thesis, spectral satellite features in transition metals were thoroughly investigated for various excitation energies around a core-level threshold. By measuring the relative spectral intensity of the satellites it was possible to extract information on the partial core-level widths. Using the nickel metal system as an example, it was shown that it is possible to probe the different core-excited states close toshake-up thresholds by measuring the relative spectral intensity variation of the Auger emission.Resonant photoemission measurements showed unambiguous evidence of interference effects. Theseeffects were also thoroughly probed using angle-dependent measurements. The combination of X-rayemission and absorption were useful for studying buried layers and interfaces due to the appreciable penetration depth of soft X-rays. X-ray scattering was further found to be useful for studying low-energy excited states of rare earth metallic compounds and transition metal oxides.

Place, publisher, year, edition, pages
Uppsala: Uppsala University, 1999
, Acta Universitatis Upsaliensis, ISSN 1104-232X ; 452
Electronic structure, resonant x-ray emission, photoemission spectroscopy
National Category
Physical Sciences
urn:nbn:se:liu:diva-56480 (URN)91-554-4463-6 (ISBN)
Public defence
Available from: 2010-05-19 Created: 2010-05-18 Last updated: 2013-11-14Bibliographically approved

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