by Dallera, C, Grioni, M, Palenzona, A, Taguchi, M, Annese, E, Ghiringhelli, G, Tagliaferri, A, Brookes, NB, Neisius, T and Braicovich, L
Abstract:
We performed bulk-sensitive x-ray absorption (XAS) in the partial fluorescence yield (PFY) mode, and resonant x-ray emission (RXES) measurements of the solid solution Sc (7 at.%):Ce at the Ce L-3 (2p–>5d) and M-4,M-5 (3d–>4f) absorption edges. We deduce an increasing 4f-band hybridization from the gamma-phase stable at room temperature to the low-temperature alpha-Ce, consistent with the “Kondo collapse” scenario for the transition. The enhanced intrinsic resolution of PFY-XAS allows us to resolve the elusive three-peak structure predicted by theory. Thanks to the selective enhancement typical of RXES, we could estimate the small but non-negligible contribution of the f(2) configuration in the hybrid ground state, and its change in the two phases. The linear dichroism effect in the M-4,M-5 RXES spectra is consistent with the observed hybridization of 4f and conduction states.
Reference:
alpha-gamma transition in metallic Ce studied by resonant x-ray spectroscopies (Dallera, C, Grioni, M, Palenzona, A, Taguchi, M, Annese, E, Ghiringhelli, G, Tagliaferri, A, Brookes, NB, Neisius, T and Braicovich, L), In PHYSICAL REVIEW B, AMERICAN PHYSICAL SOC, volume 70, 2004.
Bibtex Entry:
@article{ ISI:000223716700034,
Author = {Dallera, C and Grioni, M and Palenzona, A and Taguchi, M and Annese, E
   and Ghiringhelli, G and Tagliaferri, A and Brookes, NB and Neisius, T
   and Braicovich, L},
Title = {{alpha-gamma transition in metallic Ce studied by resonant x-ray
   spectroscopies}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2004}},
Volume = {{70}},
Number = {{8}},
Month = {{AUG}},
Abstract = {{We performed bulk-sensitive x-ray absorption (XAS) in the partial
   fluorescence yield (PFY) mode, and resonant x-ray emission (RXES)
   measurements of the solid solution Sc (7 at.%):Ce at the Ce L-3
   (2p-->5d) and M-4,M-5 (3d-->4f) absorption edges. We deduce an
   increasing 4f-band hybridization from the gamma-phase stable at room
   temperature to the low-temperature alpha-Ce, consistent with the ``Kondo
   collapse{''} scenario for the transition. The enhanced intrinsic
   resolution of PFY-XAS allows us to resolve the elusive three-peak
   structure predicted by theory. Thanks to the selective enhancement
   typical of RXES, we could estimate the small but non-negligible
   contribution of the f(2) configuration in the hybrid ground state, and
   its change in the two phases. The linear dichroism effect in the M-4,M-5
   RXES spectra is consistent with the observed hybridization of 4f and
   conduction states.}},
Publisher = {{AMERICAN PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Dallera, C (Corresponding Author), Politecn Milan, Dipartimento Fis, INFM, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy.
   Politecn Milan, Dipartimento Fis, INFM, I-20133 Milan, Italy.
   Ecole Polytech Fed Lausanne, IPN, CH-1015 Lausanne, Switzerland.
   Univ Genoa, INFM, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy.
   Spring 8, RIKEN, Mikazuki, Hyogo 6795148, Japan.
   Univ Modena & Reggio Emilia, Dipartimento Fis, INFM, I-41100 Modena, Italy.
   European Synchrotron Radiat Facil, F-38043 Grenoble, France.}},
DOI = {{10.1103/PhysRevB.70.085112}},
Article-Number = {{085112}},
ISSN = {{1098-0121}},
Keywords-Plus = {{EMISSION-SPECTROSCOPY; ELECTRONIC-STRUCTURE; POLARIZATION DEPENDENCE;
   STATE PROPERTIES; GROUND-STATE; CERIUM; PHOTOEMISSION; SCATTERING;
   SPECTRA; SYSTEMS}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Annese, Emilia/AAM-3070-2020
   Brookes, Nicholas B/C-6718-2019
   Ghiringhelli, Giacomo/D-1159-2014
   Tagliaferri, Alberto/L-2903-2015
   }},
ORCID-Numbers = {{Brookes, Nicholas B/0000-0002-1342-9530
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   Tagliaferri, Alberto/0000-0001-8001-1786
   Braicovich, Lucio/0000-0001-6548-9140
   Annese, Emilia/0000-0002-4066-697X}},
Number-of-Cited-References = {{46}},
Times-Cited = {{37}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{18}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{851WH}},
Unique-ID = {{ISI:000223716700034}},
DA = {{2020-12-22}},
}

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