Synthesis and properties of a cuprate superconductor containing double mercury-oxygen layers.

Radaelli, P G; Perroux, M; Marezio, M; de Brion, S; Tholence, J L; Huang, Q; Santoro, A · Science · 1994

basic_science · Level V

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Abstract

A cuprate superconductor containing double mercury layers was synthesized with a high-pressure, high-temperature technique. The compound, with chemical formula Hg(2)Ba(2)-Y1-xCaxCu(2)O(8-delta), contains a double HgO layer with structure similar to that of rock salt. The prototype compound Hg(2)Ba(2)YCu(2)O(8-delta) is an insulator. Superconductivity is induced in the system by partially replacing yttrium with calcium.