Published August 1, 1987
| Version v1
Journal article
Energy gap and Korringa constant in the high-temperature superconductor La/sub 1.83/Sr/sub 0.17/CuO4 determined by NMR
- 1. Department of Physics and Astronomy and Materials Research Center, Northwestern University, Evanston, Illinois 60201
Description
Polycrystalline samples of La/sub 1.83/Sr/sub 0.17/CuO4 were studied by pulsed nuclear-magnetic-resonance methods on the copper nucleus over a temperature range which included both normal and superconducting phases. A Korringa constant 14 +- 1 K sec and a minimum value for the energy gap 2Δ/k/sub B/T/sub c/ = 1.3 +- 0.2 were found. A comparison of these results with the larger gap reported from infrared absorption and from tunneling experiments indicates that there is substantial anisotropy in the pairing interaction. Homogeneous line narrowing in the superconducting state was observed
Additional details
Publishing Information
- Journal Title
- Phys. Rev., B: Condens. Matter
- Journal Volume
- 36
- Journal Issue
- 4
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 2378-2381
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18089055
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANISOTROPY; COPPER OXIDES; ENERGY GAP; EXPERIMENTAL DATA; LANTHANUM OXIDES; LINE NARROWING; NUCLEAR MAGNETIC RESONANCE; PAIRING INTERACTIONS; POLYCRYSTALS; STRONTIUM OXIDES; SUPERCONDUCTIVITY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTALS; DATA; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; INFORMATION; INTERACTIONS; LANTHANUM COMPOUNDS; MAGNETIC RESONANCE; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; RESONANCE; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS