#lk99 华南理工大学、中南和电子科技合作发布了导派论文的预印本，认为在 -24 摄氏度左右发现了超导相（冰箱超导）。
#lk99 华南理工大学、中南大学和电子科技大学合作发布了导派论文的预印本，认为在 -24 摄氏度左右发现了超导相（冰箱超导）。物质本身不是原始的 LK-99。
Strange memory effect of low-field microwave absorption in copper-substituted lead apatite
低场微波吸收在铜取代铅磷灰石中存在奇异的记忆效应
Jicheng Liu, Chenao He, Weijie Huang, Zhihao Zhen, Guanhua Chen, Tianyong Luo, Xianfeng Qiao, Yao Yao, Dongge Ma
We observe a considerable hysteresis effect of low-field microwave absorption (LFMA) in copper-substituted lead apatite. By continuously rotating samples under external magnetic field, this effect is diminished which can not be renewed by a strong magnetic field but will be spontaneously recovered after two days, indicating its glassy features and excluding possibility of any ferromagnetism. The intensity of LFMA is found to sharply decrease at around 250K, suggesting a phase transition takes place. A lattice gauge model is then employed to assign these effects to the transition between superconducting Meissner phase and vortex glass, and the slow dynamics wherein is calculated as well.
我们观察到在铜取代铅磷灰石中存在显著的低场微波吸收（LFMA）的滞后效应。通过在外部磁场下连续旋转样品，可以减弱该效应，但不会被强磁场重新恢复，而在两天后将会自动恢复，表明它具有玻璃特性，排除了任何铁磁性的可能性。发现LFMA的强度在约250K处急剧下降，提示发生了相变。随后采用晶格规范模型将这些效应归因于超导迈斯纳相和涡旋玻璃之间的转变，并计算了其中的缓慢动力学。
洗老师对论文的说明：
省流：我们测到了具有显著抗磁性磁滞回线的低场微波吸收，通过不断转动磁场方向可以令这个现象减弱直至消失。没有哪种磁性会被外磁场杀掉，除非超导。
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