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Re:LK-99 isn’t a superconductor – how science sleuths solved... by mike_d on Thursday August 17, 2023 @02:21PM (#37165898)
> The South Korean paper claimed

As I understand it the paper was a leaked preprint. Which means they didn't "claim" anything, but were distributing it to get peer review and feedback before publishing.

Re:LK-99 isn’t a superconductor – how science sleuths solved... by imiric on Friday August 18, 2023 @05:51AM (#37173405)
Whether it was a leaked preprint or not, they clearly claimed to have synthesized a SC[1].

[1]: https://arxiv.org/abs/2307.12008