Published January 1999
| Version v1
Journal article
Anomalous Dispersion of LO Phonons in La1.85 Sr0.15CuO4 at Low Temperatures
- 1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- 2. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
- 3. Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
- 4. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
- 5. Brookhaven National Laboratory, Upton, New York 11973 (United States)
- 6. Department of Physics, Tohoku University, Sendai 980 (Japan)
Description
Inelastic neutron scattering measurements of La1.85 Sr0.15 CuO4 show that a discontinuity in dispersion develops in the middle of the highest energy LO phonon branch at low temperatures. The result suggests dynamic short range unit cell doubling in the CuO2 plane along the direction of the Cu-O bond, such as charge ordering on every other row of oxygen. Such charge ordering is related to, but is different from, the stripe charge ordering observed for nonsuperconducting cuprates. copyright 1999 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 82
- Journal Issue
- 3
- Journal Page Range
- p. 628-631
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30021376
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CHEMICAL BONDS; COPPER OXIDES; HFIR REACTOR; HIGH-TC SUPERCONDUCTORS; INELASTIC SCATTERING; LANTHANUM OXIDES; NEUTRON DIFFRACTION; PHONONS; STRONTIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; ENRICHED URANIUM REACTORS; IRRADIATION REACTORS; ISOTOPE PRODUCTION REACTORS; LANTHANUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; RARE EARTH COMPOUNDS; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; SCATTERING; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TANK TYPE REACTORS; TEST FACILITIES; TEST REACTORS; THERMAL REACTORS; TRANSITION ELEMENT COMPOUNDS; WATER COOLED REACTORS; WATER MODERATED REACTORS