High Pressure Synthesis & Superconductivity of Ytterbium Polyhydrides

作者：Zhiwen Li, Xin He, Changling Zhang, K. Lu, Junli Zhang, Sijia Zhang, Jianfa Zhao, Luchuan Shi, Peng Yi, Shaomin Feng, Zheng Deng, Qingqing Liu, Xiancheng Wang, Luhong Wang, Vitali B. Prakapenka, Stella Chariton, Haozhe Liu, Changqing Jin · 发表于：Chinese Physics Letters · 年份：2025 · DOI：10.1088/0256-307x/42/4/047401 · 被引用次数：4 · 研究领域：Rare-earth and actinide compounds、Quantum, superfluid, helium dynamics、Advanced Chemical Physics Studies

Abstract Ytterbium polyhydrides were synthesized through in - situ high pressure laser heating techniques utilizing a diamond anvil cell. The temperature dependence of resistance measurement at high pressure demonstrates that the sample undergoes a superconducting transition at 11.5 K at 180 GPa. The investigation of SC under magnetic field indicates that the upper critical field at zero temperature μ 0 H c2 (0) is ∼ 5 Tesla. From the analysis of the in - situ high pressure X-ray diffraction experiments, the observed superconductivity is proposed to arise from the P m 3 ¯ n Yb 4 H 23 phase. It is speculated that the low superconducting transition temperature T c in Yb 4 H 23 might be associated with the unusual local magnetic moment in Yb at pressure.