Absence of Cu[sup 2+] electron-spin resonance in high-temperature superconductors and related insulators up to 1150 K
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Centre de Recherche sur la Physique des Solides, CNRS, 45071 Orleans Cedex 2 (France)
- Physics Department, San Diego State University, San Diego, California 92182 (United States)
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- AT T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)
- Laboratorie de Chimie du Solide, CNRS, Universite de Bordeaux I, 33405 Talence Cedex (France)
- Physics Department, University of California, San Diego, California 92093 (United States)
One unresolved question in the high-temperature superconductors and their copper oxide parent compounds is the absence of a Cu[sup 2+] electron-spin-resonance (ESR) signal even at temperatures well above the Neel temperature. We have extended the measurements up to 1150 K in both single crystals and ceramic pellets of La[sub 2]CuO[sub 4+[delta]], 0[approx lt][delta][approx lt]0.12, and no ESR signal has been observed. Our data are not compatible with the models based only on magnetic fluctuations which predict an ESR linewidth of a few hundred Oe at such high temperatures. Other suggested explanations for the absence of a Cu[sup 2+] ESR signal are discussed.
- OSTI ID:
- 6205863
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:6; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CHALCOGENIDES
CHARGED PARTICLES
COPPER COMPOUNDS
COPPER IONS
COPPER OXIDES
ELECTRON SPIN RESONANCE
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
IONS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC RESONANCE
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
RESONANCE
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CHALCOGENIDES
CHARGED PARTICLES
COPPER COMPOUNDS
COPPER IONS
COPPER OXIDES
ELECTRON SPIN RESONANCE
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
IONS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC RESONANCE
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
RESONANCE
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENT COMPOUNDS