Published October 30, 1989
| Version v1
Journal article
Spin dynamics at oxygen sites in YBa2Cu3O7
- 1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA)
Description
We report NMR measurements of the nuclear relaxation rate at all copper and oxygen sites in magnetically aligned powder samples of YBa2Cu3O7. Comparison of the oxygen and copper relaxation reveals a characteristic temperature greater than Tc. The copper relaxation rate is enhanced by antiferromagnetic copper spin fluctuations which are undiminished in the superconducting state. The absence of a coherence peak indicates that the superconductive pairing is not of the conventional BCS type
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 63
- Journal Issue
- 18
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 1992-1995
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21027142
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANTIFERROMAGNETISM; BARIUM OXIDES; COOPER PAIRS; COPPER; COPPER OXIDES; FLUCTUATIONS; OXYGEN; OXYGEN 16; OXYGEN 17; POWDERS; SPIN ECHO; SPIN-LATTICE RELAXATION; SUPERCONDUCTORS; TEMPERATURE DEPENDENCE; TIME DEPENDENCE; TRANSITION TEMPERATURE; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELEMENTS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; ISOTOPES; LIGHT NUCLEI; MAGNETISM; METALS; NONMETALS; NUCLEI; OXIDES; OXYGEN COMPOUNDS; OXYGEN ISOTOPES; PHYSICAL PROPERTIES; RELAXATION; STABLE ISOTOPES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; VARIATIONS; YTTRIUM COMPOUNDS