Fluctuation-enhanced conductivity in YBCO-PrBCO superlattices
- 1. Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstr.1, Postfach 80 06 65, 70506 Stuttgart (Germany)
Description
Measurements of the electrical resistivity in YBCO-PrBCO superlattices are reported. The resistivity curves directly above Tc were analysed using various theoretical models describing weak fluctuations in layered superconductors and considering both Aslamazov-Larkin (AL) and Maki-Thompson (MT) terms. A 3D-2D crossover and strong enhancement of fluctuation-enhanced conductivity, σprime, above the crossover temperature were revealed for all samples studied. From the analysis for a typical 7x7 superlattice ξc(0)=0.14±0.01 nm and τarphi similar eq8x10-13 s are derived for the intralayer coherence length and phase-relaxation time, respectively. This implies kBTc similar eq7h/τarphi, indicating the absence of significant pair-breaking in these high-Tc superconductors. ((orig.))
Additional details
Additional titles
- Augmented title (English)
- YBaCuO-PrBaCuO
Publishing Information
- Journal Title
- Physica. B, Condensed Matter
- Journal Volume
- 199-200
- Journal Page Range
- p. 260-261.
- ISSN
- 0921-4526
- CODEN
- PHYBE3
Conference
- Title
- International conference on strongly correlated electron systems (SCES).
- Dates
- 16-19 Aug 1993.
- Place
- San Diego, CA (United States).
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 26019271
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; ELECTRIC CONDUCTIVITY; FLUCTUATIONS; HIGH-TC SUPERCONDUCTORS; ORDER PARAMETERS; PRASEODYMIUM OXIDES; SUPERCONDUCTIVITY; SUPERLATTICES; SURFACES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; THERMODYNAMIC PROPERTIES; THIN FILMS; TRANSITION TEMPERATURE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRICAL PROPERTIES; FILMS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; SUPERCONDUCTORS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; VARIATIONS; YTTRIUM COMPOUNDS