Superconductivity near 70 K in a new family of layered copper oxides
Abstract
The discovery of a new family of high-temperature superconductors with the general formula Pb2Sr2ACu3O(8+delta), where A is a lanthanide or a mixture of Ln+Sr or Ca, is reported. Although they have the planes of CuO5 square pyramids characteristic of the other copper-oxide superconductors, the new compounds belong to a distinct structural series, with wide scope for elemental substitution. Their unusual electronic configuration also gives new insight into the role of charge distribution among the structural building blocks in controlling superconductivity.
- Publication:
-
Nature
- Pub Date:
- November 1988
- DOI:
- 10.1038/336211a0
- Bibcode:
- 1988Natur.336..211C
- Keywords:
-
- Copper Oxides;
- Crystal Structure;
- High Temperature Superconductors;
- Lead Oxides;
- Perovskites;
- Rare Earth Compounds;
- Stoichiometry;
- Strontium Compounds;
- X Ray Diffraction;
- Solid-State Physics