Radiationless Raman versus Anger behavior at the Cu L-3 resonance of CuO and Cu2O

@article{ ISI:000085497200056,
Author = {Finazzi, M and Ghiringhelli, G and Tjernberg, O and Ohresser, P and
   Brookes, NB},
Title = {{Radiationless Raman versus Anger behavior at the Cu L-3 resonance of CuO
   and Cu2O}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2000}},
Volume = {{61}},
Number = {{7}},
Pages = {{4629-4635}},
Month = {{FEB 15}},
Abstract = {{We have investigated the behavior of the 2p3p3p and 2p3s3p Anger lines
   of CuO and Cu2O scanning the photon energy across the Cu L-3 resonance.
   For both samples, when the excitation energy is below the L-3 resonance,
   we observe the 2p3p3p and 2p3s3p peaks at constant binding energy. This
   behavior is typical of nonradiative resonant Raman scattering. If the
   photon energy is raised above the L-3 maximum, the two samples behave in
   different ways. In CuO, the Auger peaks are always observed at constant
   binding energy, while in Cu2O their kinetic energy first reaches a
   maximum at correspondence with the absorption threshold, and then
   stabilizes at a value slightly higher than the off-resonance Auger
   peaks. These differences are interpreted in terms of the different
   electronic structure of the Auger intermediate state at resonance. In
   CuO, the intermediate state corresponds to a single 2p(3/2) core hole,
   with the Cu 3d band completely filled. On the contrary, in Cu2O the
   intermediate state is represented by the combination of a 2p(3/2) hole
   with a 4sp electron in strong interaction with the O-2sp valence band.
   In CuO, for photon energies higher than 1.5 eV above the L-3-edge
   maximum, the constant binding energy radiationless Raman peaks are
   accompanied by constant kinetic energy replicas. These are attributed to
   the relaxation of the Auger intermediate state through electron-hole
   pair generation across the band gap of the material. Satellites that
   could be associated to relaxation precesses involving energies smaller
   than the band gap are not resolved. No variation of the lineshape of the
   Anger peaks is observed as a function of the sample temperature,
   indicating that different densities of thermally accessible excitations
   do not have a strong influence on the recombination process of the core
   hole.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Finazzi, M (Corresponding Author), TASC INFM, Elettra Synchrotrn Light Source, Str Statale 14,Km 163-5, I-34012 Trieste, Italy.
   TASC INFM, Elettra Synchrotrn Light Source, I-34012 Trieste, Italy.
   European Synchrotron Radiat Facil, F-38043 Grenoble, France.}},
DOI = {{10.1103/PhysRevB.61.4629}},
ISSN = {{1098-0121}},
EISSN = {{1550-235X}},
Keywords-Plus = {{ELECTRONIC-STRUCTURE; AUGER-SPECTRA; PHOTOEMISSION; SPECTROSCOPY;
   TRANSITIONS; DENSITY; NI}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Ohresser, Philippe/N-5311-2019
   Ghiringhelli, Giacomo/D-1159-2014
   Brookes, Nicholas B/C-6718-2019
   Finazzi, Marco/M-7401-2015}},
ORCID-Numbers = {{Ohresser, Philippe/0000-0001-8611-1753
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   Brookes, Nicholas B/0000-0002-1342-9530
   Finazzi, Marco/0000-0002-9197-3654}},
Number-of-Cited-References = {{29}},
Times-Cited = {{34}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{19}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{287GB}},
Unique-ID = {{ISI:000085497200056}},
DA = {{2020-12-22}},
}