LK-99 Room-Temperature Superconductor

The two Chinese labs working on replicating LK-99 appear to have found a room-temperature superconductor. At first blush, here's what's different from last time: • it's more like "room temperature" than room temperature, the paper says 250K which is -10 F or -23 C. That's still HUGE if TRUE, because we can get things that cold with liquid nitrogen • we have actually discovered a superconductor at this temperature before, but it was at high pressure. This paper says it's potentially superconductive AT AMBIENT, NORMAL PRESSURE • it has *already* replicated, with two separate labs in China confirming the results. Last time the big question was "will it replicate." And the answer this time seems to be "it already has" lead apatite Hongyang Wang, Yao Yao, Ke Shi, Ying Zhao, Hao Wu, Zhiwei Wu, Zhihui Gang, Shu-Seng Yu, Miao Cheng Download PDF HTML (experimental) With copper-substituted lead apatite below room temperature, we observe diamagnetic dc magnetization under magnetic field of 25 Oe with remarkable bifurcation between zero-field-cooling and field-cooling measurements, and under 200 Oe it changes to be paramagnetism. A glassy memory effect is found during cooling. Typical hysteresis loops for superconductors are detected below 250 K, along with an asymmetry between forward and backward sweep of magnetic field. Our experiment suggests a room temperature Meissner effect is possibly present in this material. Comments: 7 pages, 4 figures Subjects: Superconductivity (cond-mat.supr-con) Cite as: arXiv:2401.00099 [cond-mat.supr-con]

A screenshot of a social-media post discusses two Chinese laboratories allegedly replicating LK-99, a controversial material claimed to show superconductivity near room temperature. The joke is the cautiously excited scientific tone: unlike the previous claim, the result has reportedly been replicated and may work at ambient pressure, making it a reaction image for surprising or seemingly unbelievable breakthroughs.

• @dev_meme / 5777 2024-01-03