Published May 1, 1988
| Version v1
Journal article
Electronic structure of YBa2Cu3O7-x by positron annihilation
- 1. Geneva Univ. (Switzerland). Dept. de Physique de la Matiere Condensee
- 2. Ames Lab., IA (USA)
Description
We report the first 2D-ACPAR measurement performed on single crystals of the high-Tc superconductor YBa2Cu3O7-x. The main features of the electronic structure have been experimentally determined. The electronic occupation number in the Brillouin zone supports the results of band structure calculations. Occupation numbers do not change drastically at Tc. The 2D shape parameter is anisotropic. Its temperature dependence exhibits an anomaly around the superconducting transition and has a larger slope in the normal state
Additional details
Publishing Information
- Journal Title
- Europhys. Lett.
- Journal Volume
- 6
- Journal Issue
- 1
- Series
- Europhys. Lett.
- Journal Page Range
- 61-66
- CODEN
- EULEE
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 19071881
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANGULAR CORRELATION; ANNIHILATION; BARIUM OXIDES; COPPER OXIDES; ELECTRONIC STRUCTURE; LOW TEMPERATURE; OCCUPATION NUMBER; POSITRONS; SHAPE; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE; TWO-DIMENSIONAL CALCULATIONS; VERY LOW TEMPERATURE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CORRELATIONS; ELEMENTARY PARTICLES; FERMIONS; INTERACTIONS; LEPTONS; MATTER; OXIDES; OXYGEN COMPOUNDS; PARTICLE INTERACTIONS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS