Some remarks on possible superconductivity of composition Pb${}_9$CuP${}_6$O${}_{25}$

P. Abramian, A. Kuzanyan, V. Nikoghosyan +2

A material called LK-99, a modified-lead apatite crystal structure with the composition Pb${}_{10-x}$Cu${}_x$(PO${}_4$)${}_6$O ($0.9<x<1.1$) has been reported to be an above-room-temperatu…