Published July 1, 1989
| Version v1
Journal article
The superconductor glasses (SuG)
Description
It is shown that the value of the 1/ψ critical exponent measured on sintered high-Tc granular superconductors (La1.85Sr0.15CuO4-δ and YBa2Cu3O7-δ) can be understood within the framework of a fractal model. Using the fractal cluster model, it is shown that under the hypothesis of ν = 1.33, the fractal dimension of these systems can be always straightforwardly derived. The comparison between the values of the SuG critical exponents and those of the spin glasses (SG) suggests the inclusion of both the ensembles of critical systems in a unique universality class whose definition differs from the usual one. (author)
Additional details
Additional titles
- Subtitle (English)
- A fractal description
Publishing Information
- Journal Title
- Physica Status Solidi B
- Journal Volume
- 154
- Journal Issue
- 1
- Series
- Phys. Status Solidi B.
- Journal Page Range
- 273-279
- ISSN
- 0370-1972
- CODEN
- PSSBB
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- German Democratic Republic
- INIS RN
- 21013699
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- AMORPHOUS STATE; BARIUM OXIDES; COPPER OXIDES; FRACTALS; GRANULAR MATERIALS; JOSEPHSON JUNCTIONS; LANTHANUM OXIDES; MAGNETIC SUSCEPTIBILITY; MATHEMATICAL MODELS; PHASE STUDIES; SINTERED MATERIALS; SOLID CLUSTERS; SPIN GLASS STATE; STRONTIUM OXIDES; SUPERCONDUCTORS; TRANSITION TEMPERATURE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; LANTHANUM COMPOUNDS; MAGNETIC PROPERTIES; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SEMICONDUCTOR JUNCTIONS; STRONTIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS