Intermediate valence behaviour under pressure: how precisely can we probe it by means of resonant inelastic x-ray emission?

@article{ ISI:000228249400015,
Author = {Dallera, C and Annese, E and Rueff, JP and Grioni, M and Vanko, G and
   Braicovich, L and Barla, A and Sanchez, JP and Gusmeroli, R and
   Palenzona, A and Degiorgi, L and Lapertot, G},
Title = {{Intermediate valence behaviour under pressure: how precisely can we
   probe it by means of resonant inelastic x-ray emission?}},
Journal = {{JOURNAL OF PHYSICS-CONDENSED MATTER}},
Year = {{2005}},
Volume = {{17}},
Number = {{11, SI}},
Pages = {{S849-S858}},
Month = {{MAR 23}},
Note = {{2nd International Symposium on Physics of Solids Under High Pressure
   Using Nuclear Probes, Cologne, GERMANY, JUL 20-24, 2004}},
Abstract = {{Rare earths and their compounds show many interesting physical phenomena
   caused by the complex electronic structure related to f electrons.
   External pressure can affect the hybridization between 5d band electrons
   and the more atomic-like 4f ones, giving rise to intermediate valence
   behaviour. Resonant x-ray emission spectroscopy (RXES) has been shown to
   be a very effective tool for probing the mixed valence ground state
   under pressure. A RXES experiment detects the x-ray emission that
   follows decay into a resonantly created core hole. Being a photon-
   in-photon-out spectroscopic technique, it is not hindered by the
   presence of the pressure cell. In the case of rare earths we chose to
   detect the 3d-2p x-ray emission following a 2p-5d resonant excitation
   process. The divalent and trivalent components of the ground state are
   separately enhanced because they resonate at different incident photon
   energies. Very good precision in the determination of even small changes
   of valence is reached. We will present experimental results on ytterbium
   compounds (YbAl2 and YbS), as well as recent data on the valence state
   of SmS in the gold phase, that have allowed us to unveil the progressive
   valence change towards the completion of trivalency. The spectral
   changes and the way to extract the valence from measured spectra will be
   discussed.}},
Publisher = {{IOP PUBLISHING LTD}},
Address = {{DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND}},
Type = {{Article; Proceedings Paper}},
Language = {{English}},
Affiliation = {{Dallera, C (Corresponding Author), Politecn Milan, Dipartimento Fis, INFM, Piazza L da Vinci 32, I-20133 Milan, Italy.
   Politecn Milan, Dipartimento Fis, INFM, I-20133 Milan, Italy.
   Univ Modena & Reggio Emilia, Dipartimento Fis, INFM, I-41100 Modena, Italy.
   Univ Paris 06, Lab Chim Phys Mat & Rayonnement, UMR 7614, F-75231 Paris, France.
   EPFL, IPN, CH-1015 Lausanne, Switzerland.
   European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   CEA, SPSMS, DRFMC, F-38054 Grenoble, France.
   Politecn Milan, Dipartimento Elettron & Informat, I-20133 Milan, Italy.
   Univ Genoa, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy.
   ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland.}},
DOI = {{10.1088/0953-8984/17/11/014}},
ISSN = {{0953-8984}},
Keywords-Plus = {{MAGNETIC-SUSCEPTIBILITY; INTERMETALLIC COMPOUNDS; MONOCHALCOGENIDES;
   EXPANSION; YBAL2}},
Research-Areas = {{Physics}},
Web-of-Science-Categories  = {{Physics, Condensed Matter}},
Author-Email = {{claudia.dallera@fisi.polimi.it}},
ResearcherID-Numbers = {{Rueff, Jean-Pascal/D-8938-2016
   Vanko, Gyorgy/B-8176-2012
   LAPERTOT, Gerard/B-3354-2008
   Annese, Emilia/AAM-3070-2020
   Barla, Alessandro/C-4282-2015
   }},
ORCID-Numbers = {{Rueff, Jean-Pascal/0000-0003-3594-918X
   Vanko, Gyorgy/0000-0002-3095-6551
   Barla, Alessandro/0000-0002-5632-4915
   Braicovich, Lucio/0000-0001-6548-9140
   Annese, Emilia/0000-0002-4066-697X}},
Number-of-Cited-References = {{29}},
Times-Cited = {{13}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{9}},
Journal-ISO = {{J. Phys.-Condes. Matter}},
Doc-Delivery-Number = {{914TA}},
Unique-ID = {{ISI:000228249400015}},
DA = {{2020-12-22}},
}