High-Temperature Superconductors, the First Ternary System

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Science  31 Mar 1972:
Vol. 175, Issue 4029, pp. 1465-1466
DOI: 10.1126/science.175.4029.1465


A new system of high-temperature superconductors is reported. The compounds, Mo6 - xAxS6 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.