A Strategy for Higher Temperature Superconductivity in the Layered Cuprates
Abstract
Recent attempts to raise the critical temperatures of cuprate superconductors are reviewed and discussed in terms of covalent electron transfer between Cu ions of mixed valence. A report of possible superconductivity effects at 250 K is examined from the standpoint of ABO2 parent-cell building blocks identified as superconducting by Goodenough and his students at the University of Texas. Based on the mounting evidence that cation mixed valence is responsible for the superconduction in these compounds, compositions (Ca(1-x)Na(x))CuO2, (Sr(1-x)Ag(x))CuO2, and (Ba(1-x)K(x))CuO2 are proposed as chemical systems for obtaining superconductors with maximum feasible critical temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 10, 1995
- Accession Number
- ADA296885
Entities
People
- G. F. Dionne
Organizations
- Massachusetts Institute of Technology