X-ray absorption studies of La/sub 2-//sub x/(Ba,Sr)/sub x/CuO/sub 4/ superconductors
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
X-ray absorption spectroscopy has been used to study superconducting compounds with the composition La/sub 2-//sub x/(Ba,Sr)/sub x/CuO/sub 4/ for x = 0 to 0.3 X-ray absorption measurements at the Cu K edge indicate that the copper valence is 2+ for all dopant concentrations, and that the mean square relative displacements for Cu-O nearest neighbors are approximately the same for all compositions, with an average characteristic temperature of 570 +- 30 K. Measurements at the La L/sub 3/ edge suggest that the number of empty states near the Fermi energy with O 2p character increases with dopant concentration.
- Research Organization:
- Brookhaven National Laboratory, Upton, New York 11973
- OSTI ID:
- 6089629
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 35:13; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
Similar Records
X-ray-absorption near-edge-structure study of La/sub 2-//sub x/(Ba,Sr)/sub x/CuO/sub 4-//sub y/ superconductors
X-ray absorption studies of YBa sub 2 Cu sub 3 O sub 6+x , La sub 2-x Sr sub x CuO sub 4 , and Nd sub 2-x Ce sub x CuO sub 4
X-ray absorption studies of YBa sub 2 Cu sub 3 O sub 6+ x , La sub 2 minus x Sr sub x CuO sub 4 , and Nd sub 2 minus x Ce sub x CuO sub 4
Journal Article
·
Thu Oct 01 00:00:00 EDT 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6252578
X-ray absorption studies of YBa sub 2 Cu sub 3 O sub 6+x , La sub 2-x Sr sub x CuO sub 4 , and Nd sub 2-x Ce sub x CuO sub 4
Conference
·
Sat Dec 31 23:00:00 EST 1988
·
OSTI ID:5363309
X-ray absorption studies of YBa sub 2 Cu sub 3 O sub 6+ x , La sub 2 minus x Sr sub x CuO sub 4 , and Nd sub 2 minus x Ce sub x CuO sub 4
Conference
·
Wed Jan 24 23:00:00 EST 1990
· AIP Conference Proceedings (American Institute of Physics); (USA)
·
OSTI ID:6793823
Related Subjects
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DATA
DIFFRACTION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL DENSITY
EXPERIMENTAL DATA
FERMI LEVEL
HOLES
INFORMATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
SCATTERING
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
SYNCHROTRON RADIATION
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VALENCE
X-RAY DIFFRACTION
X-RAY SPECTRA
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DATA
DIFFRACTION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL DENSITY
EXPERIMENTAL DATA
FERMI LEVEL
HOLES
INFORMATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
SCATTERING
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
SYNCHROTRON RADIATION
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VALENCE
X-RAY DIFFRACTION
X-RAY SPECTRA