Photoemission study of a high-T/sub c/ superconducting Bi-Sr-Ca-Cu oxide
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
We have used ultraviolet, x-ray, and inverse-photoemission spectroscopies to characterize the electronic structure of a novel bismuth cuprate compound with an average composition Bi/sub 2.5/Sr/sub 1.5/Ca/sub 1/Cu/sub 2/O/sub y/ which becomes superconductor at 84 K. The data indicate that the valence band is shifted approx.2 eV to higher binding energy with respect to band-structure calculations. This together with the presence of shake-up satellites in the Cu 2p spectrum suggests that U/sub d//sub d/ is approx.6 eV for Cu 3d electrons in this Bi compound. The electron-electron correlation seems to be much smaller in the Bi-O planes than in the Cu-O planes. The chemical state of the cations is basically Cu/sup 2+/, Bi/sup 3+/, Ca/sup 2+/, and Sr/sup 2+/.
- Research Organization:
- Departamento de Fisica de la Materia Condensada, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
- OSTI ID:
- 6933511
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:7; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Photoemission from single-crystalline Bi-Sr-Ca-Cu-O
Nature of the states near the Fermi level of the layered superconductors of Bi/sub 2/Ca/sub 1/Sr/sub 2/Cu/sub 2/O/sub 8/ and Bi/sub 2/Sr/sub 2/CuO/sub 6/
Journal Article
·
Tue Jan 31 23:00:00 EST 1989
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6757607
Photoemission from single-crystalline Bi-Sr-Ca-Cu-O
Journal Article
·
Sat Oct 01 00:00:00 EDT 1988
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6782219
Nature of the states near the Fermi level of the layered superconductors of Bi/sub 2/Ca/sub 1/Sr/sub 2/Cu/sub 2/O/sub 8/ and Bi/sub 2/Sr/sub 2/CuO/sub 6/
Journal Article
·
Sat Dec 31 23:00:00 EST 1988
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6481184
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BAND THEORY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
IONIZING RADIATIONS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
RADIATIONS
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
ULTRAVIOLET RADIATION
X RADIATION
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BAND THEORY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
IONIZING RADIATIONS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
RADIATIONS
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
ULTRAVIOLET RADIATION
X RADIATION