Superconducting properties of epitaxial YBa2Cu3O7/PrBa2Cu3O7/YBa2Cu3O7 heterostructures
- 1. Dept. de Fisica, Univ. del Valle, Cali (Colombia)
Description
Heteroepitaxial thin films of superconducting YBa2Cu3O7 and semiconducting PrBa2Cu3O7 with SIS structure were produced by dc-sputtering at high oxygen pressures (3-4mbar) on SrTiO3 (001) substrates using a set of MgO masks. The superconducting properties of YBa2Cu3O7/PrBa2Cu3O7/YBa2Cu3O7 trilayers were examined by resistivity, susceptibility and current-voltage characteristics. PrBa2Cu3O7 interlayer thicknesses ranged between 10 and 100 nm. The superconducting transition temperatures exceed 82 K for very thin PrBa2Cu3O7 barriers. A SNS-like behaviour was found. The epitaxial growth with no chemical reaction at the interfaces is very likely to be responsible for the excellent superconducting properties found in this multilayer system. (orig.)
Additional details
Publishing Information
- Journal Title
- Physica. C, Superconductivity
- Journal Volume
- 185-189
- Journal Issue
- pt.3
- Series
- Phys., C Supercond.
- Journal Page Range
- 2029-2030
- ISSN
- 0921-4534
- CODEN
- PHYCE
Conference
- Title
- The science of HTSC.
- Acronym
- 3. international conference on materials and mechanisms of superconductivity high temperature superconductors (M2S-HTSC-3)
- Dates
- 22-26 Jul 1991.
- Place
- Kanazawa (Japan).
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 23042340
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BARIUM OXIDES; CHEMICAL REACTIONS; COPPER OXIDES; ELECTRIC CONDUCTIVITY; EPITAXY; HETEROJUNCTIONS; HIGH-TC SUPERCONDUCTORS; INTERFACES; MAGNESIUM OXIDES; MAGNETIC SUSCEPTIBILITY; PRASEODYMIUM OXIDES; QUATERNARY COMPOUNDS; SPUTTERING; STRONTIUM TITANATES; SUBSTRATES; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; THICKNESS; THIN FILMS; TRANSITION TEMPERATURE; X-RAY DIFFRACTION; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; AMINES; BARIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL GROWTH METHODS; DIFFRACTION; DIMENSIONS; ELECTRICAL PROPERTIES; FILMS; MAGNESIUM COMPOUNDS; MAGNETIC PROPERTIES; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; SCATTERING; SEMICONDUCTOR JUNCTIONS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS