Nature of the conduction-band states in YBa/sub 2/Cu/sub 3/O/sub 7/ as revealed by its yttrium Knight shift
Journal Article
·
· Phys. Rev. Lett.; (United States)
The small positive /sup 89/Y Knight shift in YBa/sub 2/Cu/sub 3/O/sub 7/ (K/sub Y/approx. =2 x 10/sup -4/) reported by two groups is shown to require that the in-plane conduction band be formed from the ..pi..-bonding, Cu 3d/sub x//sub y/ and O 2p..pi../sub x//sub ,(//sub y//sub )/ orbitals with O 2p..pi..-like antibonding states at the Fermi level. The negative K/sub Y/approx. =-10/sup -4/ reported by another group is consistent with either this ..pi.. conduction band or one formed from the sigma-bonding Cu 3d/sub x//sub <2/-y/sup =/ and O 2psigma/sub x//sub ,(//sub y//sub )/ orbitals provided again that the Fermi-level states are largely oxygenlike.
- Research Organization:
- Applied Physics Laboratory, The Johns Hopkins University, Laurel, Maryland 20707
- OSTI ID:
- 6743719
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 61:18; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Sat Aug 01 00:00:00 EDT 1987
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BAND THEORY
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KNIGHT SHIFT
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM 89
YTTRIUM COMPOUNDS
YTTRIUM ISOTOPES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BAND THEORY
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KNIGHT SHIFT
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM 89
YTTRIUM COMPOUNDS
YTTRIUM ISOTOPES