压力下镍氧化物中高温超导电性研究进展  

Research progress on the nickelate high-T c superconductivity under pressure

作　　者：霍梦五 王猛 HUO Mengwu;WANG Meng(Center for Neutron Science and Technology,School of Physics,Sun Yat-sen University,Guangzhou 510275,China;Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices,School of Physics,Sun Yat-sen University,Guangzhou 510275,China)

机构地区：[1]中山大学物理学院中子科学与技术中心,广东广州510275 [2]中山大学物理学院广东省磁电物性分析与器件重点实验室,广东广州510275

出　　处：《物理实验》2025年第2期1-13,共13页Physics Experimentation

基　　金：国家自然科学基金项目(No.12425404)。

摘　　要：自超导体被发现以来,铜氧化物是第一类到达液氮温区的非常规超导体.2023年中山大学研究团队在双层镍氧化物La_(3)Ni_(2)O_(7)单晶样品中发现了14 GPa压力下80 K的超导电性,使La_(3)Ni_(2)O_(7)成为继铜氧化物高温超导体后第二类进入液氮温区的非常规超导体,为揭示高温超导机制提供了全新的研究体系.在镍氧化物体系中探索超导电性、研究超导机制对推动高温超导机理研究具有重要意义.本文总结了在具有双层和3层镍氧面结构的镍氧化物La_(3)Ni_(2)O_(7)和La_(4)Ni_(3)O_(10)中,探索超导电性方面取得的部分重要实验进展.Since the discovery of superconductors,copper oxides have been the first type of unconventional superconductors that can reach the liquid nitrogen temperature range.In 2023,a research team from Sun Yat-sen University discovered superconductivity at 80 K under a pressure of 14 GPa in a bilayer nickel oxide La_(3)Ni_(2)O_(7)’s single-crystal sample.This finding makes La_(3)Ni_(2)O_(7) the second type of unconventional superconductor to enter the liquid nitrogen temperature range after the copper oxide high-temperature superconductors,providing a brand-new research system for revealing the mechanism of high-temperature superconductivity.Exploring superconductivity and studying the superconducting mechanism in the nickel oxide system are of great significance for advancing the research on high-temperature superconductivity mechanisms.This paper summarized some important experimental progress made in exploring superconductivity in nickel oxides with bilayer and trilayer nickel oxide structures,specifically in La_(3)Ni_(2)O_(7) and La_(4)Ni_(3)O _(10).

关 键 词：非常规超导体 镍氧化物超导体 高温超导电性 

分 类 号：O511[理学—低温物理]