Abstract
Photoemission and bremsstrahlung-isochromat-spectroscopy data on a cleaved NiO single crystal are presented and compared to band- and cluster-theory predictions. In contrast to band-theory predictions the band gap is found to be large but not determined solely by the even larger $d\ensuremath{-}d$ Coulomb interactions so that NiO is not a Mott-Hubbard insulator in the simplest sense. A large $d\ensuremath{-}d$ interaction need not prevent NiS from being a metal.
Keywords
Non-blocking I/OCondensed matter physicsBremsstrahlungBand gapCoulombPhysicsMott insulatorStrongly correlated materialCluster (spacecraft)Materials scienceQuantum mechanicsElectronChemistry
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Publication Info
- Year
- 1984
- Type
- article
- Volume
- 53
- Issue
- 24
- Pages
- 2339-2342
- Citations
- 918
- Access
- Closed
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Cite This
G. A. Sawatzky,
J. W. Allen
(1984).
Magnitude and Origin of the Band Gap in NiO.
Physical Review Letters
, 53
(24)
, 2339-2342.
https://doi.org/10.1103/physrevlett.53.2339
Identifiers
- DOI
- 10.1103/physrevlett.53.2339