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Physicists listened to electrical noise to crack a superconductor mystery

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Superconductors carry electricity without resistance, but most only work a few degrees above absolute zero. In the late 1980s, copper-based materials called cuprates were found to superconduct at higher temperatures—reachable with affordable liquid nitrogen. Yet nearly 40 years later, physicists still don't agree on why.

In a recent Science study,…

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