X-ray M-4,M-5 resonant Raman scattering from La metal with a final 4p hole: Calculations with 4p-4d-4f configuration interaction in the final state and comparison to experiments

@article{ ISI:000169459300042,
Author = {Taguchi, M and Braicovich, L and Ghiringhelli, G and Tagliaferri, A and
   Borgatti, F and Dallera, C and Giarda, K and Brookes, NB},
Title = {{X-ray M-4,M-5 resonant Raman scattering from La metal with a final 4p
   hole: Calculations with 4p-4d-4f configuration interaction in the final
   state and comparison to experiments}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2001}},
Volume = {{63}},
Number = {{23}},
Month = {{JUN 15}},
Abstract = {{We consider the x-ray resonant Raman scattering (RRS) in La in the whole
   M-4,M-5 region ending with a state with a 4p hole, along the sequence
   3d(10)4f(0)-->3d(9)4f(1) --> 3d(10)4p(5)4f(1). The final state
   configuration mixes with that with two 4d holes, i.e,,
   3d(10)4d(8)4f(n+2) having almost the same energy. Thus RRS must be
   described by introducing final-state configuration interaction (CI)
   between states with one 4p hole and with two 4d holes, This approach
   allows detailed experimental data on La metal to be interpreted on the
   basis of a purely ionic approach. It is shown that the inclusion of CI
   is crucial and has very clear effects. The calculations with the
   Kramers-Heisenberg formula describe all measured spectral features
   appearing in the strict Raman regime, i.e., dispersing with the incident
   photon energy. In the experiment also a nondispersive component is
   present when the excitation energy is greater than about 2 eV above the
   M-5 peak. The shape and position of this component is well accounted for
   by a model based on all possible partitions of the excitation energy
   between localized and extended states. However the intensity of the
   nondispersive component is greater in the measurements, suggesting a
   rearrangement in the intermediate excited state. The comparison of ionic
   calculations with the metal measurements is legitimate, as shown by the
   comparison between the measurements on La metal and on LaF3 with M-5
   excitation giving the same spectrum within the experimental accuracy.
   Moreover the experiment shows that the final lifetime broadening is much
   greater in the final states corresponding to lower outgoing photon
   energies than in the states corresponding to higher outgoing photon
   energies.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Taguchi, M (Corresponding Author), Abdus Salam Int Ctr Theoret Phys, POB 586, I-34100 Trieste, Italy.
   Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy.
   INFM, Dipartimento Fis Politecn, I-20133 Milan, Italy.
   Univ Modena, INFM, Dipartimento Fis, I-41100 Modena, Italy.
   European Synchrotron Radiat Facil, F-38043 Grenoble, France.}},
DOI = {{10.1103/PhysRevB.63.235113}},
Article-Number = {{235113}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{PHOTOEMISSION SPECTRA; GD; SPECTROSCOPY}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Borgatti, Francesco/H-9777-2014
   Brookes, Nicholas B/C-6718-2019
   Tagliaferri, Alberto/L-2903-2015
   Ghiringhelli, Giacomo/D-1159-2014
   }},
ORCID-Numbers = {{Borgatti, Francesco/0000-0003-4659-4329
   Brookes, Nicholas B/0000-0002-1342-9530
   Tagliaferri, Alberto/0000-0001-8001-1786
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{14}},
Times-Cited = {{4}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{6}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{445LQ}},
Unique-ID = {{ISI:000169459300042}},
DA = {{2020-12-22}},
}