Anomalous enhancement of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 Fermi-level states near the O 2 s threshold
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Department of Chemistry, The University of Manchester Institute of Science and Technology, P.O. Box 88, Manchester M601QD, United Kingdom (GB)
- Centre for High Temperature Superconductivity, Blackett Laboratory, Imperial College of Science, Technology and Medicine, South Kensington, London SW72AY, United Kingdom (GB)
- Science and Engineering Research Council, Daresbury Laboratory, Warrington WA44AD, United Kingdom (GB)
- Interdisciplinary Research Centre in Surface Science and Chemistry Department, Manchester University, Manchester M139PL, United Kingdom (GB)
Photoemission studies of the (001) face of the high-temperature superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} have been performed over the photon energy range 16.5--19 eV. Such spectra have previously been analyzed in terms of O 2{ital s} resonant photoemission behavior and used to assign O 2{ital p} character to features close to the Fermi level. We show that these results may be significantly influenced by the presence of Sr 4{ital p} and O 2{ital s} core-level peaks created by a small second-order component of the exciting radiation. This could provide an explanation for the anomalous enhancement of states close to the Fermi level recently reported by Wells {ital et} {ital al}.
- OSTI ID:
- 5622462
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 44:2; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
Similar Records
Empty states near the Fermi level in Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/
Comparison of the empty electronic states of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 (001) and Bi sub 2 Sr sub 2 CuO sub 6 (001) at 60 and 300 K
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
Journal Article
·
Fri Mar 31 23:00:00 EST 1989
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6151461
Comparison of the empty electronic states of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 (001) and Bi sub 2 Sr sub 2 CuO sub 6 (001) at 60 and 300 K
Journal Article
·
Mon Oct 01 00:00:00 EDT 1990
· Physical Review, B: Condensed Matter; (USA)
·
OSTI ID:6014475
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
Journal Article
·
Mon May 01 00:00:00 EDT 1995
· Physical Review, B: Condensed Matter
·
OSTI ID:45542
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
EMISSION
ENERGY LEVELS
ENERGY-LEVEL DENSITY
FERMI LEVEL
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHOTOEMISSION
SECONDARY EMISSION
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
EMISSION
ENERGY LEVELS
ENERGY-LEVEL DENSITY
FERMI LEVEL
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHOTOEMISSION
SECONDARY EMISSION
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS