Electronic structure of Bi-based copper oxide superconductors: A comparative photoemission study of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 , Bi sub 2 Sr sub 2 CuO sub 6 , and Bi sub 2 Sr sub 2 CoO sub 6+. delta
- Engineering Research Institute, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan (JP)
- Synchrotron Radiation Laboratory, Institute for Solid State Physics, University of Tokyo, Tanashi, Tokyo 118, Japan (JP)
- Department of Physics, Science University of Tokyo, Kagurazaka, Shinjuku-ku, Tokyo 162, Japan (JP)
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan (JP)
Bi-based high-{ital T}{sub {ital c}} copper oxide superconductors, Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8}, Bi{sub 2}Sr{sub 2}CuO{sub 6}, and a related material Bi{sub 2}Sr{sub 2}CoO{sub 6+{delta}} have been studied by photoemission spectroscopy. While common prominent structures at high-binding energies ({gt}2 eV) are attributed to oxygen 2{ital p} states in the Bi-O planes, emission near the Fermi level ({ital E}{sub {ital F}}) is different from one other, indicating that these states are oxygen 2{ital p} states hybridizing with the transition-metal 3{ital d} states. For the states near {ital E}{sub {ital F}}, the resonant behavior at the Cu 3{ital p}-3{ital d} absorption threshold and the photon energy dependence of the intensities are shown to be consistent with CuO{sub 3}{ital d}{sup 9}--O 2{ital p} hole local singlets formed within the CuO{sub 2} planes.
- OSTI ID:
- 6905276
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:10; ISSN PRBMD; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electronic structure of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} and Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8}: Near-O-1{ital s}-threshold excitation x-ray fluorescence studies
Comparative soft-x-ray resonant-photoemission study on Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 , CuO, and Cu sub 2 O
Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BINDING ENERGY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COBALT COMPOUNDS
COBALT OXIDES
COPPER COMPOUNDS
COPPER OXIDES
D STATES
ELECTRONIC STRUCTURE
EMISSION
ENERGY
ENERGY LEVELS
FERMI LEVEL
HOLES
HYBRIDIZATION
OXIDES
OXYGEN COMPOUNDS
P STATES
PHOTOEMISSION
SECONDARY EMISSION
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS