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Maybe check out the canonical page instead: https://phys.org/news/2023-01-superconductivity-magic-angle-graphene.html

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Wow

At what temperature does this function?

Also pressure

The paper the article is based on is paywalled but they mention cryogenic regime, so I assume this is NOT a high T superconductor. Graphene superconducts at very low temperatures, in the low single Kelvins, so that gives you some context.

It's some cool (literally) science but definitely in the 'proof-of-principle' class and not the 'soon to be commercialised' class.

So is it basically useless as a superconductor?