this post was submitted on 16 Aug 2023
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LK-99 isn’t a superconductor — how science sleuths solved the mystery (www.nature.com)
submitted 2 years ago by [email protected] to c/[email protected]
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[–] [email protected] 31 points 2 years ago

TLDR:

  • Meisner effect caused by ferromagnetic impurities, wasn’t actually levitating, just parts of it were repelled by the magnet.
  • Extreme change in resistivity at 104.8 degrees C caused by internal copper sulfide molecules, which exhibit a phase change exactly at that temperature.
  • a team grew a single crystal version. It’s an insulator.