Published August 21, 1995
| Version v1
Journal article
Direct Observation of a Magnetic Gap in Superconducting La1.85Sr0.15CuO4 (Tc=37.3K)
Creators
- 1. Institute of Inorganic Synthesis, Faculty of Engineering, Yamanashi University, Miyamae-cho 7, Kofu 400 (Japan)
- 2. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
- 3. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
- 4. Department of Physics, Tohoku University, Aramaki Aoba, Sendai, 980-77 (Japan)
Description
Neutron inelastic scattering experiments have been performed on homogeneous single crystals of La1.85Sr0.15CuO4 with Tc=37.3 K (at onset), higher than any previously studied single crystals. The temperature dependence of the low energy incommensurate peak intensity at (π(1±δ),π) and (π,π(1±δ)) exhibits a pronounced maximum near Tc. In contrast to the results reported on lower Tc crystals, the intensity below 3.5 meV dramatically decreases as the temperature decreases below Tc, vanishing into the background below ∼15 K. The behavior is consistent with predictions based on a dx2-y2 superconducting order parameter
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 75
- Journal Issue
- 8
- Journal Page Range
- p. 1626-1629.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27018864
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- COPPER OXIDES; D WAVES; ENERGY GAP; HIGH-TC SUPERCONDUCTORS; INELASTIC SCATTERING; LANTHANUM OXIDES; MAGNETISM; MONOCRYSTALS; NEUTRON DIFFRACTION; ORDER PARAMETERS; STRONTIUM OXIDES; STRUCTURE FACTORS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTALS; DIFFRACTION; LANTHANUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PARTIAL WAVES; RARE EARTH COMPOUNDS; SCATTERING; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS