Superconductivity above 70 K observed in lutetium polyhydrides

作     者：Zhiwen Li Xin He Changling Zhang Ke Lu Baosen Min Jun Zhang Sijia Zhang Jianfa Zhao Luchuan Shi Yi Peng Shaomin Feng Zheng Deng Jing Song Qingqing Liu Xiancheng Wang Richeng Yu Luhong Wang Yingzhe Li Jay D.Bass Vitali Prakapenka Stella Chariton Haozhe Liu Changqing Jin Zhiwen Li;Xin He;Changling Zhang;Ke Lu;Baosen Min;Jun Zhang;Sijia Zhang;Jianfa Zhao;Luchuan Shi;Yi Peng;Shaomin Feng;Zheng Deng;Jing Song;Qingqing Liu;Xiancheng Wang;Richeng Yu;Luhong Wang;Yingzhe Li;Jay D.Bass;Vitali Prakapenka;Stella Chariton;Haozhe Liu;Changqing Jin

作者机构：Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing100190China Songshan Lake Materials LaboratoryDongguan523808China Shanghai Advanced Research in Physical SciencesShanghai201203China Department of GeologyUniversity of Illinois at Urbana ChampaignUrbana61801USA Center for Advanced Radiations SourcesUniversity of ChicagoChicago60637USA Center for High Pressure Science&Technology Advanced ResearchBeijing100094China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2023年第66卷第6期

页      面：95-100页

核心收录：

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported by the Natural Science Foundation of China the National Key R&D Program of China Chinese Academy of Sciences through research projects(Grant Nos.2018YFA0305700,2021YFA1401-800,and XDB33010200) 

主　　题：lutetium polyhydrides superconductors at high pressures high pressure synthesis 

摘      要：The binary polyhydrides of heavy rare earth lutetium that shares a similar valence electron configuration to lanthanum have been experimentally discovered to be *** lutetium polyhydrides were successfully synthesized at high pressure and high temperature conditions using a diamond anvil cell in combinations with the in-situ high pressure laser heating *** resistance measurements as a function of temperature were performed at the same pressure of synthesis in order to study the transitions of superconductivity(SC).The superconducting transition with a maximum onset temperature(Tc)71 K was observed at pressure of 218 GPa in the *** Tcdecreased to 65 K when pressure was at 181 *** the evolution of SC at applied magnetic fields,the upper critical field at zero temperatureμ0Hc2(0)was obtained to be~36 *** in-situ high pressure X-ray diffraction experiments imply that the high TcSC should arise from the Lu4H23phase with Pm3n symmetry that forms a new type of hydrogen cage framework different from those reported for previous light rare earth polyhydride superconductors.