Temperature dependence of crystal field excitations in CuO

@article{ ISI:000333798500008,
Author = {Huotari, S. and Simonelli, L. and Sahle, C. J. and Sala, M. Moretti and
   Verbeni, R. and Monaco, G.},
Title = {{Temperature dependence of crystal field excitations in CuO}},
Journal = {{JOURNAL OF PHYSICS-CONDENSED MATTER}},
Year = {{2014}},
Volume = {{26}},
Number = {{16}},
Month = {{APR 23}},
Abstract = {{We report a study on the temperature dependence of charge-neutral
   crystal field (dd) excitations in cupric oxide, using nonresonant
   inelastic x-ray scattering spectroscopy. Thanks to a very high-energy
   resolution (Delta E = 60 meV), we observe thermal effects on the dd
   excitation spectrum fine structure between temperatures of 10-320 K. The
   spectra broaden considerably with increasing temperature, consistently
   with an enhancement of the coupling between crystal field excitations
   and the temperature-dependent continuum of states above the band gap. We
   discuss this and other mechanisms that may explain this temperature
   dependence.}},
Publisher = {{IOP PUBLISHING LTD}},
Address = {{TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Huotari, S (Corresponding Author), Univ Helsinki, Dept Phys, POB 64, FI-00014 Helsinki, Finland.
   Huotari, S.; Sahle, C. J., Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland.
   Huotari, S.; Simonelli, L.; Sala, M. Moretti; Verbeni, R.; Monaco, G., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Monaco, G., Univ Trento, Dept Phys, I-38123 Povo, Italy.}},
DOI = {{10.1088/0953-8984/26/16/165501}},
Article-Number = {{165501}},
ISSN = {{0953-8984}},
EISSN = {{1361-648X}},
Keywords = {{crystal field excitations; inelastic x-ray scattering; CuO}},
Keywords-Plus = {{X-RAY-SCATTERING; OXIDE}},
Research-Areas = {{Physics}},
Web-of-Science-Categories  = {{Physics, Condensed Matter}},
ResearcherID-Numbers = {{Sahle, Christoph/T-1326-2017
   Sahle, Christoph/P-6715-2019
   Sala, Marco Moretti/H-1034-2014
   Monaco, Giulio/AAW-4387-2020
   Simonelli, Laura/I-1963-2015
   Moretti, Marco/AAF-9255-2019
   }},
ORCID-Numbers = {{Sahle, Christoph/0000-0001-8645-3163
   Sahle, Christoph/0000-0001-8645-3163
   Sala, Marco Moretti/0000-0002-9744-9976
   Monaco, Giulio/0000-0003-2497-6422
   Moretti, Marco/0000-0002-9744-9976
   Huotari, Simo/0000-0003-4506-8722}},
Funding-Acknowledgement = {{Academy of FinlandAcademy of Finland {[}1256211, 1127462, 1259526];
   University of Helsinki Research Funds {[}490076]}},
Funding-Text = {{Beamtime was granted by the European Synchrotron Radiation Facility.
   Funding was provided by the Academy of Finland (grants 1256211, 1127462
   and 1259526) and University of Helsinki Research Funds (grant 490076).
   The chemical purity and stoichiometry of the CuO crystal was confirmed
   by standardless energy dispersive spectrometry using a Jeol JXA-8600
   electron probe microanalyzer at the Department of Geosciences and
   Geography, University of Helsinki. We are grateful to C Henriquet, M-C
   Lagier and the whole beamline ID16 team and support groups for expert
   assistance, advice, and encouragement in the experiment. We would like
   to thank M W Haverkort, M Hakala, M Gatti and C Rodl for fruitful
   discussions, as well as C Sternemann and W Schulke for lending the
   sample.}},
Number-of-Cited-References = {{57}},
Times-Cited = {{11}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{34}},
Journal-ISO = {{J. Phys.-Condes. Matter}},
Doc-Delivery-Number = {{AE2JG}},
Unique-ID = {{ISI:000333798500008}},
OA = {{Green Published}},
DA = {{2020-12-22}},
}