Density and symmetry of unoccupied electronic states of Tl sub 2 Ba sub 2 CaCu sub 2 O sub 8
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Kernforschungszentrum Karlsruhe, Institut fuer Nukleare Festkoerperphysik, Post Office Box 3640, D-7500 Karlsruhe, Federal Republic of Germany (DE)
- Fakultaet fuer Physik, Universitaet Regensburg, D-8400 Regensburg, Federal Republic of Germany (Germany, F.R.)
The local density and symmetry of unoccupied electronic states at the O and Cu sites in Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} single crystals has been investigated by measuring O 1{ital s} and Cu 2{ital p} absorption edges. High-energy electron-energy-loss spectroscopy in transmission has been used. There are O 2{ital p}{sub {ital x},{ital y}} states at the Fermi level from the CuO{sub 2} planes and O 2{ital p}{sub {ital z}} states from the BaO and TlO layers. The empty Cu 3{ital d} states have predominantly 3{ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} symmetry. There is an admixture of about 10% probably with 3{ital d}{sub 3{ital z}{sup 2}{minus}{ital r}{sup 2}} character.
- OSTI ID:
- 6963666
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:4; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ENERGY LEVELS
ENERGY-LEVEL DENSITY
ENERGY-LOSS SPECTROSCOPY
FERMI LEVEL
HOLES
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
SPECTRA
SPECTROSCOPY
SUPERCONDUCTORS
SYMMETRY
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ENERGY LEVELS
ENERGY-LEVEL DENSITY
ENERGY-LOSS SPECTROSCOPY
FERMI LEVEL
HOLES
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
SPECTRA
SPECTROSCOPY
SUPERCONDUCTORS
SYMMETRY
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION ELEMENT COMPOUNDS