The First Room-Temperature Ambient-Pressure Superconductor (?)

For the first time in the world, we succeeded in synthesizing the room-temperature superconductor (Tc≥400 K, 127∘C) working at ambient pressure with a modified lead-apatite (LK-99) structure. The superconductivity of LK-99 is proved with the Critical temperature (Tc), Zero-resistivity, Critical current (Ic), Critical magnetic field (Hc), and the Meissner effect. The superconductivity of LK-99 originates from minute structural distortion by a slight volume shrinkage (0.48 %), not by external factors such as temperature and pressure. The shrinkage is caused by Cu2+ substitution of Pb2+(2) ions in the insulating network of Pb(2)-phosphate and it generates the stress. It concurrently transfers to Pb(1) of the cylindrical column resulting in distortion of the cylindrical column interface, which creates superconducting quantum wells (SQWs) in the interface. The heat capacity results indicated that the new model is suitable for explaining the superconductivity of LK-99. The unique structure of LK-99 that allows the minute distorted structure to be maintained in the interfaces is the most important factor that LK-99 maintains and exhibits superconductivity at room temperatures and ambient pressure.

This would be a huge technological breakthrough if it’s really true (this time). The authors are ‘known’ to be reputable. Here’s hoping that another lab is already attempting to recreate these results. As you know we’ve been ‘fooled’ before.

(the hacker news comments on this are full of ecstasy and skepticism)


Yeah, there are a lot of retracted papers out there. This one just hit the news today:


Good dive into what is and is not going on here. “It’s complicated” might actually undersell this. Sounds like they used a very nonspecific technique to make this stuff, such that there are different crystals with different properties int he bulk material. Exciting, but lots of work to be done.

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