Hole states in CuO sub 2 planes and Cu-O chains of YBa sub 2 Cu sub 3 O sub 7 and YBa sub 2 Cu sub 4 O sub 8 probed by soft-x-ray absorption spectroscopy
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Department of Physics, State University of New York at Buffalo, Buffalo, New York 14260 (United States)
- Institut fuer Nukleare Festkoerperpysik, Kernforschungszentrum Karlsruhe, Postfach 3640, W-7500 Karlsruhe (Germany)
- Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Department of Physics, Northwestern University, Evanston, Illinois 60208 (United States)
- Institut fuer Kristallchemie, Universitaet Karlsruhe, W-7500 Karlsruhe (Germany)
- Labor fuer Festkoerperphysik, Eidgenoessische Technische Hochschule Zuerich, Hoenggerberg, CH 8093 Zuerich (Switzerland)
- Walter-Meissner-Institut, W-8046 Garching (Germany)
The symmetry and density of unoccupied states of twin-free YBa{sub 2}Cu{sub 3}O{sub 7} and YBa{sub 2}Cu{sub 4}O{sub 8} single crystals have been investigated by orientation-dependent x-ray absorption spectroscopy at the O 1{ital s} edge, using a bulk-sensitive fluoresence-yield-detection method. In conjunction with earlier results obtained by electron-energy-loss spectroscopy, the relative density of unoccupied states for different oxygen sites has been derived. Comparison with local-density energy-band-structure calculations shows reasonable agreement with the experimental results.
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5000784
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Vol. 45:5; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
HOLES
BARIUM OXIDES
COPPER OXIDES
FLUORESCENCE SPECTROSCOPY
MONOCRYSTALS
QUATERNARY COMPOUNDS
TWINNING
X-RAY SPECTROSCOPY
YTTRIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
EMISSION SPECTROSCOPY
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)
HIGH-TC SUPERCONDUCTORS
HOLES
BARIUM OXIDES
COPPER OXIDES
FLUORESCENCE SPECTROSCOPY
MONOCRYSTALS
QUATERNARY COMPOUNDS
TWINNING
X-RAY SPECTROSCOPY
YTTRIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
EMISSION SPECTROSCOPY
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)