The Cu-12(n-1)n Superconducting Homologous Series

The novel superconducting homologous series CuBa2Can-1CunO2n+2+ (i. e., Cu-12(n-1)n) have been introduced. The compounds can be synthesized only under high pressure high temperature so far. The physical properties of Cu-12(n-1)n are briefly compared with other high Tc superconductors, while the advantages of the Cu-12(n-1)n superconductors in terms of simple composition, higher Tc and better high temperature high magnetic field properties are stressed.