The claim of room-temperature, ambient-pressure superconductivity in copper-doped lead apatite, LK-99, was both sensational and puzzling. I describe how this puzzle was solved. An entirely different property, superionicity, of a byproduct produced by copper doping was mistaken to be superconductivity.
- copper sulfide
- high-temperature superconductivity
- lead apatite
- phase transition
- room-temperature superconductor
ASJC Scopus subject areas
- General Materials Science