Nuclear resonance properties of YBa sub 2 Cu sub 3 O sub 6+x superconductors

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Science (Washington, D.C.); (USA)

DOI:https://doi.org/10.1126/science.248.4959.1082· OSTI ID:6520779

Walstedt, R E; Warren, Jr, W W ^[1]

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1. AT T Bell Laboratories, Murray Hill, NJ (USA)

Nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) results for copper-63, oxygen-17, and yttrium-89 nuclei in the superconducting composition range of YBa{sub 2}Cu{sub 3}O{sub 6+x} (0.4 {le} x {le} 1.0) are reviewed and interpreted. Copper NMR shift and susceptibility data, combined with a simple ionic model of local magnetic properties, yield a comprehensive analysis of the normal-state anisotropic susceptibility components and full characterization of the copper spin and orbital hyperfine coupling. Data on the spin-lattice relaxation time of these three nuclear species serve to characterize the highly correlated fermion dynamics in this system. Relaxation data from YBa{sub 2}Cu{sub 3}O{sub 7} (superconducting transition temperature T{sub c} = 90 K) and oxygen-deficient samples of this material (T{sub c} {approximately}60 K) have been analyzed in terms of mean-field models incorporating short-range antiferromagnetic order, giving a quantitative account of (planar) relaxation for these three nuclei in terms of a single dynamical susceptibility. 65 refs., 4 figs., 2 tabs.

• OSTI ID: 6520779
• Journal Information: Science (Washington, D.C.); (USA), Journal Name: Science (Washington, D.C.); (USA) Journal Issue: 4959 Vol. 248:4959; ISSN SCIEA; ISSN 0036-8075
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
COPPER 63
COPPER COMPOUNDS
COPPER ISOTOPES
DATA
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
OXYGEN 17
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
RADIOISOTOPES
RELAXATION
RESONANCE
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPIN-LATTICE RELAXATION
STABLE ISOTOPES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM 89
YTTRIUM COMPOUNDS
YTTRIUM ISOTOPES