Superconductivity at 52.5 K in the Lanthanum-Barium-Copper-Oxide System

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Science  30 Jan 1987:
Vol. 235, Issue 4788, pp. 567-569
DOI: 10.1126/science.235.4788.567


A superconducting transition with an onset temperature of 52.5 K has been observed under hydrostatic pressure in compounds with nominal compositions given by (La0.9Ba0.1)2 CuO4-Y. Possible causes for the high-temperature superconductivity are discussed.

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