Authors:Hongyang Wang, Yijing Zhao, Hao Wu, Ling Wang, Zhixing Wu, Zhihui Geng, Jiewen Xiao, Weiwei Xue, Shufeng Ye, Ning Chen, Xianfeng Qiao, Yao Yao View PDF HTML (experimental) Abstract:Through heavily doping sulfur into an apatite framework, we synthesize a new blend mainly comprising variant apatite and covellite (copper sulfide). Magnetic measurement exhibits that significant diamagnetism appears at around 260 K and drops dramatically below 30 K implying coexistence of two superconducting ...