Tomorrow is the day for the Koreans to present at the APS conference.

Hyun Tak Kim says March 4 will be Room Temperature Superconductor day.

Related questions:

/Jubilee/will-audoped-leadapatite-be-proven

/Jubilee/will-agdoped-leadoxide-be-proven-to

Roughly speaking, this question is an attempt to get at the question "is there anything interesting at all going on with LK-99, even if it isn't a room temperature superconductor?".

Some reports have LK-99 superconducting at around 100K: https://arxiv.org/abs/2308.01192

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Observation of zero resistance above 100$^\circ$ K in Pb$_{10-x}$Cu$_x$(PO$_4$)$_6$O

Room-temperature superconductivity has always been regarded as the ultimate goal in the fields of solid-state physics and materials science, with its realization holding revolutionary significance, capable of triggering significant changes in energy transmission and storage. However, achieving it poses various challenges. Recent research revealed that material Pb$_{10-x}$Cu$_x$(PO$_4$)$_6$O displays room-temperature superconductivity under atmospheric pressure, sparking global interest in further exploration. Here, we utilized solid-phase synthesis to obtain a polycrystalline sample of Pb$_{10-x}$Cu$_x$(PO$_4$)$_6$O. X-ray diffraction confirmed its structural consistency with referenced literature. Zero resistance, which is important evidence for superconductivity, was observed above 100$^\circ$ K under ambient pressure in our experiment. Our finding indicates that Pb$_{10-x}$Cu$_x$(PO$_4$)$_6$O is a possible candidate for searching high-temperature superconductors.

Related question:

But that's a fairly narrow question. There are also questions as to what LK-99 is, and whether the proposed structure is correct. This is an attempt to write a question that is robust in the face of that potential confusion.

And it's possible that somehow the original authors found an interesting materials family, but that they got major details in their paper wrong. Perhaps someone else will find a related interesting material, such as with silver or gold doping instead of copper.

My hope is that if something interesting is going on, this question will trade higher than the main LK-99 question. If it's all a giant pile of mundane fraud and measurement error, they'll trade at similar levels.

@EvanDaniel it was trading lower!