High-Temperature Superconductors, the First Ternary System

Abstract

A new system of high-temperature superconductors is reported. The compounds, Mo_{6 - x}A_xS₆ where A is Cu, Zn, Mg, Ag, Cd, Sn, or Pb, are rhombohedral with a ≃6.5 angstroms and ∼90°. The transition temperatures range from ∼ 2.5°K for the Cd compound to ∼ 13°K for the Pb compound.