Possible explanation for the superconducting 240-K phase in the Y-Ba-Cu-O system
Abstract
It is shown here that high-temperature superconductivity in the Y-Ba-Cu-O system may be envisaged as a fractal structure whose localized vibrations are responsible both for an effective electron-electron coupling and a high transition temperature. This model should also be applicable to the La-Ba-Cu-O system where the transition temperature of the disordered phase shows superconductivity at about 35 K while structural instabilities are observed up to 200 K.
- Publication:
-
Nature
- Pub Date:
- October 1987
- DOI:
- 10.1038/329700a0
- Bibcode:
- 1987Natur.329..700B
- Keywords:
-
- Barium Oxides;
- Copper Oxides;
- High Temperature Superconductors;
- Mixed Oxides;
- Superconductivity;
- Yttrium Oxides;
- Josephson Junctions;
- Transition Temperature;
- Solid-State Physics