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  4f excitations in Ce Kondo lattices studied by resonant inelastic x-ray scattering

Amorese, A., Dellea, G., Fanciulli, M., Seiro, S., Geibel, C., Krellner, C., et al. (2016). 4f excitations in Ce Kondo lattices studied by resonant inelastic x-ray scattering. Physical Review B, 93(16): 165134, pp. 1-6. doi:10.1103/PhysRevB.93.165134.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-C5DD-C Version Permalink: http://hdl.handle.net/21.11116/0000-0001-08FB-C
Genre: Journal Article

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 Creators:
Amorese, A.1, Author
Dellea, G.1, Author
Fanciulli, M.1, Author
Seiro, S.2, Author              
Geibel, C.3, Author              
Krellner, C.4, Author              
Makarova, I. P.1, Author
Braicovich, L.1, Author
Ghiringhelli, G.1, Author
Vyalikh, D. V.1, Author
Brookes, N. B.1, Author
Kummer, K.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Silvia Seiro, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863473              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
4Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: The potential of resonant inelastic soft x-ray scattering to measure 4f crystal electric-field excitation spectra in Ce Kondo lattices has been examined. Spectra have been obtained for several Ce systems and show a well-defined structure determined by crystal-field, spin-orbit, and charge-transfer excitations only. The spectral shapes of the excitation spectra can be well understood in the framework of atomic multiplet calculations. For CeCu2Si2 we found notable disagreement between the inelastic x-ray-scattering spectra and theoretical calculations when using the crystal-field scheme proposed from inelastic neutron scattering. Modified sets of crystal-field parameters yield better agreement. Our results also show that, with the very recent improvements of soft x-ray spectrometers in resolution to below 30 meV at the Ce M-4,M-5 edges, resonant inelastic x-ray scattering could be an ideal tool to determine the crystal-field scheme in Ce Kondo lattices and other rare-earth compounds.

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Language(s): eng - English
 Dates: 2016-04-252016-04-25
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 93 (16) Sequence Number: 165134 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008