"Origin of correlated isolated flat bands in copper-substituted lead phosphate apatite" (2023) https://arxiv.org/abs/2307.16892 :
> Abstract: A recent report of room temperature superconductivity at ambient pressure in Cu-substituted apatite (`LK99') has invigorated interest in the understanding of what materials and mechanisms can allow for high-temperature superconductivity. Here I perform density functional theory calculations on Cu-substituted lead phosphate apatite, identifying correlated isolated flat bands at the Fermi level, a common signature of high transition temperatures in already established families of superconductors. I elucidate the origins of these isolated bands as arising from a structural distortion induced by the Cu ions and a chiral charge density wave from the Pb lone pairs. These results suggest that a minimal two-band model can encompass much of the low-energy physics in this system. Finally, I discuss the implications of my results on possible superconductivity in Cu-doped apatite
No, Lawrence Berkeley National Lab, which is Up the Hill from Berkeley. They're run by the same underlying organization but are distinct (yet overlapping in many ways). LBL evolved out of the UC Berkeley Rad Lab, run by Earnest O. Lawrence (same name as the current lab). They do non-classified research.
There is also Lawrence Livermore National Lab, which is nearby, but in Livermore. They do classified research in addition to non-classified. I suppose it's one of the two places they simulate nuclear weapons... errr, run large scale multi-physics combustion codes for stockpile stewardship.
> I suppose it's one of the two places they simulate nuclear weapons... errr, run large scale multi-physics combustion codes for stockpile stewardship.
Back in the '90s my friend (jokingly) lamented that they wouldn't let him try to play Everquest on their computer.
Well, well, well. That felt coordinated. Turns out it was.
https://twitter.com/paulg/status/1733146138226614465?ref_src...