Mixed valency, hole concentration, and T/sub c/ in YBa/sub 2/Cu/sub 3/O/sub 6+//sub x/

Journal Article · Mon Oct 31 23:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.8893· OSTI ID:6726005

Tranquada, J M; Heald, S M; Moodenbaugh, A R; Xu, Y

Combining the assumptions that in orthorhombic YBa/sub 2/Cu/sub 3/O/sub 6+//sub x/ oxygen is removed from the CuO chains one chain at a time and that the Cu atoms in the twofold coordinated sites of the empty chains have a valence of +1 leads to the prediction that the number of Cu/sup 1+/ ions per unit cell is equal to 1-x. X-ray absorption measurements at the Cu K edge in both oriented and unoriented quenched samples with 0

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6726005
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:13; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
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
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
HOLES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECTRA
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VALENCE
X-RAY SPECTRA
YTTRIUM COMPOUNDS
YTTRIUM OXIDES