Electron-energy-loss spectra of the high-T/sub c/ superconductors Y-Ba-Cu-O and La-Sr-Cu-O
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
Electronic excitations of Y-Ba-Cu-O in superconducting and nonsuperconducting form and of La-Sr-Cu-O have been investigated by electron-energy-loss spectroscopy (EELS) in the valence and shallow core region, both in dN/dE and N(E) form. The importance of quasiatomic resonances in the loss region 15 eVless than or equal to..delta..Eless than or equal to50 eV are emphasized, while the differences observed between superconducting and nonsuperconducting Y-Ba-Cu-O are ascribed to differences in the Cu-O stoichiometry. The temperature-induced decomposition of Y-Ba-Cu-O leads to a BaO-type surface layer; EELS from this layer corroborates the present loss assignments. The influence of electron-beam irradiation on La-Sr-Cu-O is discussed.
- Research Organization:
- Institut fuer Physikalische Chemie, Universitaet Innsbruck, A-6020 Innsbruck, Austria
- OSTI ID:
- 6552062
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Journal Issue: 1 Vol. 39:1; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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· Phys. Rev. B: Condens. Matter; (United States)
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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
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ENERGY LEVELS
ENERGY-LOSS SPECTROSCOPY
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LOW TEMPERATURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLASMONS
QUASI PARTICLES
RARE EARTH COMPOUNDS
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
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
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ENERGY LEVELS
ENERGY-LOSS SPECTROSCOPY
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LOW TEMPERATURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLASMONS
QUASI PARTICLES
RARE EARTH COMPOUNDS
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES