Published November 1, 1991
| Version v1
Journal article
Anisotropic thermopower in the a-b plane of an untwinned YBa2Cu3O7-δ crystal
Creators
- 1. Department of Physics, University of Leeds, Leeds LS2 9JT (United Kingdom)
Description
We have measured the thermopower of an untwinned crystal of YBa2Cu3O7-δ in both the a and b directions. In the a direction the thermopower is about +0.7 μV/K just above Tc, while in the b direction the thermopower is opposite in sign and -6 μV/K. The sharp peak observed at Tc in twinned crystals is only clearly present in the a-axis measurement. At temperatures close to room temperature the a-axis thermopower becomes temperature independent and very small. It is argued that the peak is evidence of superconducting fluctuation effects in the thermopower
Additional details
Publishing Information
- Journal Title
- Physical Review, B: Condensed Matter
- Journal Volume
- 44
- Journal Issue
- 17
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 9757-9759
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 23021557
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANISOTROPY; BARIUM OXIDES; COPPER OXIDES; FLUCTUATIONS; HIGH-TC SUPERCONDUCTORS; MONOCRYSTALS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; THERMOELECTRIC PROPERTIES; TWINNING; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTALS; ELECTRICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; VARIATIONS; YTTRIUM COMPOUNDS