https://arxiv.org/abs/2308.05778


https://arxiv.org/abs/2308.05778

Current percolation model for the special resistivity behavior observed in Cu-doped ApatiteSince the initial report of the potential occurrence of room-temperature superconductivity under normal pressure [arXiv: 2307.12008], there has been significant interest in the field of condensed matter physics regarding Cu-doped Apatite (Pb10-xCux(PO4)6O). In this study, we performed temperature-dependent resistivity measurements on the synthesized Pb10-xCux(PO4)6O samples. The structure of the sample was confirmed to match the reference literature through X-ray diffraction analysis. Remarkably, we observed four distinct types of resistivity behaviors within samples from the same pellet: (1) A semiconductor-like behavior characterized by a decrease in resistivity as the temperature is lowered. (2) A gradual reduction in resistivity, reaching an exceptionally small value that falls below the resolution limits of our measurement equipment. (3) An abrupt drop in resistivity to a low value at ~ 250 K. (4) An almost linear reduction in resistivity exhibiting a transition at approximately 7 K (possibly associated with Pb). Following a thorough compositional analysis, we proposed a current percolation model, based on the formation of a Cu/Pb current channel, to elucidate the observed special resistivity behaviors. It is important to note that the Meissner effect was not observed in our magnetization measurements. Consequently, we reached the conclusion that the presence of superconductivity in Cu-doped Apatite has yet to be substantiated.arxiv.org


유사한 상전이 관측했다는 거 같은데


지난주 목요일 밤에 올라와야 했던 논문인데

내용이 너무 민감해서 아카이브에서 보류되었다가 월요일에 올라온 논문이랜다


https://www.bilibili.com/video/BV19u4y1i7nu/?spm_id_from=333.999.0.0


对我们观察到的LK-99奇特电阻行为的解释。论文全文：https://arxiv.org/abs/2308.05778 其实周四晚上就传arXiv了，视频也准备了，结果可能话题太敏感，被arXiv hold on了，结果周一才online。


사실 목요일 밤에 arXiv에 업로드되어 영상이 준비되었지만, 주제가 너무 민감할 수 있다는 것이 밝혀져 arXiv에서 보류되었고, 그 결과 월요일에야 온라인에 공개되었습니다.