First independent measurement of zero resistance in LK-99

"A team of scientists from the Physics Department of Southeast University, a top university in Nanjing, China, have reported measuring 0 resistance in a sample of LK-99 they synthesized from scratch. Here is the video: - They measure 0 resistance at 110K (-163C) using the four-point probe method. 0 resistance at this high of a temperature at ambient pressure is a new discovery in materials science - They also claim a transition in and out of zero resistance state depending on a strongly applied magnetic field - a classic characteristic of superconductivity. - The sample they synthesized is reported to have much higher purity than the original Korean team of LKK - They note an interesting and abrupt drop in resistance, by several orders of magnitude, between ~300 and 220K (approx values from the graph). This is currently unexplained, but is in rough agreement with LKK - i.e., LKK may have been measuring this higher-temperature 'drop' which was two orders of magnitude. - They retain the claim that this is not absolute conclusive proof of superconductivity, but it is suggestive of very interesting electronic properties in this material. These results compare nicely with recent simulations out of Lawrence Berkeley National Lab, University of Boulder Colorado, Shenyang National Laboratory, and TU Wien, all performed by high profile and established materials scientists. Those simulations have converged on LK-99 having the potential for superconductivity at high temperatures and ambient pressures due to the formation of flat energy bands when lead-apatite crystal is doped with copper. Notably, other doping metals may also achieve similar or better performance. ... https://www.youtube.com/watch?v=bs-bigSXXeM