New research reignites the possibility of LK-99 superconductivity at room temperature — controversial material demonstrates the tell-tale Meissner Effect up to 250 K

A joint paper between Chinese and Japanese universities on LK-99 and published to the pre-print research server Arxiv seems to provide more smoke to the LK-99 superconductivity saga. The teams managed to replicate each others' results in synthesizing copper-substituted lead apatite that showcased the Meissner effect (negating an externally applied magnetic field) due to superconductive hysteresis loops emerging at temperatures of 100 K (-173.15 C), 200 K (-73.15 C), and 250 K (-23.15 C) and possibly 300 K (26 C).