by CICCACCI, F, BRAICOVICH, L, PUPPIN, E and VESCOVO, E
Abstract:
We present a set of angle-integrated inverse-photoemission data on Fe2O3 taken in the ultraviolet region (12.1-24.2 eV) in the isochromat mode. The photon-energy dependence of the spectra gives direct insight into the orbital origin of the empty electron states in the oxide. The results are discussed in terms of the available theories based on a cluster model with configuration interaction, which reproduce quite well the direct-photoemission results. It is shown that these calculations are less satisfactory in fitting the electron-addition spectroscopy of empty states. We suggest that this might be due to an overestimation of U, the on-site d-d Coulomb correlation energy.
Reference:
EMPTY ELECTRON-STATES IN FE2O3 BY ULTRAVIOLET INVERSE-PHOTOEMISSION SPECTROSCOPY (CICCACCI, F, BRAICOVICH, L, PUPPIN, E and VESCOVO, E), In PHYSICAL REVIEW B, AMER PHYSICAL SOC, volume 44, 1991.
Bibtex Entry:
@article{ ISI:A1991GP68900002,
Author = {CICCACCI, F and BRAICOVICH, L and PUPPIN, E and VESCOVO, E},
Title = {{EMPTY ELECTRON-STATES IN FE2O3 BY ULTRAVIOLET INVERSE-PHOTOEMISSION
   SPECTROSCOPY}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{1991}},
Volume = {{44}},
Number = {{19}},
Pages = {{10444-10448}},
Month = {{NOV 15}},
Abstract = {{We present a set of angle-integrated inverse-photoemission data on Fe2O3
   taken in the ultraviolet region (12.1-24.2 eV) in the isochromat mode.
   The photon-energy dependence of the spectra gives direct insight into
   the orbital origin of the empty electron states in the oxide. The
   results are discussed in terms of the available theories based on a
   cluster model with configuration interaction, which reproduce quite well
   the direct-photoemission results. It is shown that these calculations
   are less satisfactory in fitting the electron-addition spectroscopy of
   empty states. We suggest that this might be due to an overestimation of
   U, the on-site d-d Coulomb correlation energy.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{CICCACCI, F (Corresponding Author), POLITECN MILAN, I-20133 MILAN, ITALY.}},
DOI = {{10.1103/PhysRevB.44.10444}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{CONDUCTIVITY; ALPHA-FE2O3; SATELLITES; ABSORPTION; SPECTRA; FEXO; NIO}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{ciccacci, franco/N-9392-2013
   }},
ORCID-Numbers = {{ciccacci, franco/0000-0002-1131-4748
   Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{21}},
Times-Cited = {{40}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{6}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{GP689}},
Unique-ID = {{ISI:A1991GP68900002}},
DA = {{2020-12-22}},
}

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