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Materials scientists at Argonne National Laboratory synthesized single crystals of a metallic trilayer nickelate compound, which shows similarities to a technologically valuable class of materials called high-temperature superconductors — and with the right ingredients, could potentially become one. Above: The crystal structure of such a compound. Credit: Zhang et. al

A team at DOE Argonne National Laboratory has identified a nickel oxide compound as an unconventional but promising candidate material for high-temperature superconductivity. The team successfully synthesized single crystals of a metallic trilayer nickelate compound, a feat the researchers believe to be a first. “It’s poised for superconductivity in a way not found in other nickel oxides...