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PaperclipPerfector  1yr ago (text post)   3950 thread views

Small-Scale Question Sunday for July 23, 2023

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New paper from the Chinese Academy of Sciences proposes that the high-temperature steep change in resistance may have been due to Cu2S contamination. That's nice in the sense that it's a fully honest explanation -- Lee et all's original paper could be entirely measuring real things, no fraud or even measurement goofup! -- but would leave their samples as just weird rather than superconducting. There's still some space for exploration, since the XRDs from other labs pointed more to CuS2 and this doesn't explain the 110K behavior supposedly observed by the Southeast University of China, but it drastically raises likelihood of a prosaic explanation.

Thanks for keeping up with this story!

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