Published January 29, 1990
| Version v1
Journal article
Upper critical field of a Sm1.85Ce0.15CuO4-y single crystal: Interaction between superconductivity and antiferromagnetic order in copper oxides
- 1. Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093 (USA)
Description
The temperature dependence of the anisotropic upper critical magnetic field, Hc2(T), has been determined resistively in antiferromagnetic Sm1.85Ce0.15CuO4-y single crystals. We observe the first evidence in high-Tc copper oxides for the interaction between superconductivity and antiferromagnetic ordering of rare-earth ions; estimates of the exchange coupling J∼0.1 eV and the Ginzburg-Landau coherence lengths ξab=79 A and ξc=14.7 A are obtained. In both Nd1.84Ce0.16CuO4-y and Sm1.85Ce0.15CuO4-y, the Hc2 data above TN can be described by Hc2(T)/Hc2+(0)=(1-T/Tc)1.6
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 64
- Journal Issue
- 5
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 599-602
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21057639
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANTIFERROMAGNETIC MATERIALS; CERIUM OXIDES; COPPER OXIDES; CRITICAL FIELD; EXCHANGE INTERACTIONS; GINZBURG-LANDAU THEORY; MONOCRYSTALS; NEODYMIUM OXIDES; SAMARIUM OXIDES; SQUID DEVICES; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TEMPERATURE DEPENDENCE
- Descriptors DEC
- CERIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTALS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELECTRONIC EQUIPMENT; EQUIPMENT; FLUXMETERS; INTERACTIONS; MAGNETIC FIELDS; MAGNETIC MATERIALS; MATERIALS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; NEODYMIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SAMARIUM COMPOUNDS; SUPERCONDUCTING DEVICES; TRANSITION ELEMENT COMPOUNDS