Ultraviolet photoemission study of single-crystal BaPb/sub 1/minus//ital x//Bi/sub /ital x//O/sub 3/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
An ultraviolet photoemission study on single-crystal BaPb/sub 1/minus//ital x//Bi/sub /ital x//O/sub 3/ with/ital x/=0.15 (superconductor) and /ital x/=1.0 (semiconductor) has been presented. A clear Fermi-edge structure was observed for the first time for the superconducting compound. A rigid shift of the valence band by 0.3--0.4 eV between the superconductor and the semiconductor was observed although the shift is much smaller than predicted from the band-structure calculation. The ''mysterious 9-eV peak,'' whose origin has been controversial in cuprate superconductors, was found also for degraded crystal surfaces of BaPb/sub 1/minus//ital x//Bi/sub /ital x//O/sub 3/. Its origin was discussed in connection with the difference and similarity in the high-/ital T//sub /ital c// mechanism between cuprate and noncuprate superconductors.
- Research Organization:
- Department of Physics, Tohoku University, Sendai 980, Japan (JP); Engineering Research Institute, University of Tokyo, Tokyo 113, Japan
- OSTI ID:
- 6050936
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 40:4; 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
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COOPER PAIRS
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
EMISSION
LEAD COMPOUNDS
LEAD OXIDES
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHOTOEMISSION
PHYSICAL PROPERTIES
SECONDARY EMISSION
SPECTRA
SUPERCONDUCTIVITY
ULTRAVIOLET SPECTRA
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COOPER PAIRS
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
EMISSION
LEAD COMPOUNDS
LEAD OXIDES
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHOTOEMISSION
PHYSICAL PROPERTIES
SECONDARY EMISSION
SPECTRA
SUPERCONDUCTIVITY
ULTRAVIOLET SPECTRA