Published 2009
| Version v1
Journal article
Renormalization of the longitudinal bond-stretching phonon branch in La1.95Sr0.05CuO4 probed by inelastic neutron scattering technique
- 1. Institut fuer Festkoerperphysik, KIT, Karlsruhe (Germany)
- 2. LLB, CEA Saclay, Gif sur Yvette (France)
- 3. Institute for Materials Research, Tohoku Univ., Katahira, Sendai (Japan)
Description
La2-xSrxCuO4 becomes superconducting (sc) for 0.06≤x<0.3, where optimal doping of x=0.15 results in Tc up to 38 K. The mechanism leading to SC remains to be understood. Neutron scattering experiments revealed anomalous phonon behavior that hints at an enhanced electron-phonon coupling possibly connected to dynamic stripe order. We report our latest measurements on non-sc La1.95Sr0.05CuO4. Shell model predictions including resolution effects were used to fit the data. We found that in comparison to the sc-samples the anomalous phonon behavior becomes much less pronounced.
Additional details
Identifiers
Publishing Information
- Journal Title
- Verhandlungen der Deutschen Physikalischen Gesellschaft
- Journal Issue
- Dresden 2009 issue
- Series
- Also available as printed version: Verhandlungen der Deutschen Physikalischen Gesellschaft v. 44(5)
- Journal Page Range
- [1 p.]
- ISSN
- 0420-0195
- CODEN
- VDPEAZ
Conference
- Title
- DPG Spring meeting 2009 of the condensed matter section with the divisions biological physics, chemical and polymer physics, dielectric solids, dynamics and statistical physics, low temperature physics, magnetism, metal and material physics, semiconductor physics, surface science, thin films, vacuum science and technology as well as the working groups industry and business, physics of socio-economic systems
- Dates
- 22-27 Mar 2009
- Place
- Dresden (Germany)
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 41043555
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CUPRATES; ELECTRON-PHONON COUPLING; INELASTIC SCATTERING; LANTHANUM COMPOUNDS; NEUTRON DIFFRACTION; PHONONS; RENORMALIZATION; STRONTIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; COPPER COMPOUNDS; COUPLING; DIFFRACTION; OXYGEN COMPOUNDS; QUASI PARTICLES; RARE EARTH COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- Session: TT 25.3 Mi 10:00; No further information available