高压极端条件下的富氢高温超导体  

Hydrogen-Rich Superconductors with High Critical Temperature under High Pressure

作　　者：陈胤圻 王洪波 CHEN Yinqi;WANG Hongbo(State Key Laboratory of Superhard Materials,College of Physics,Jilin University,Changchun 130012,Jilin,China)

机构地区：[1]吉林大学物理学院,超硬材料国家重点实验室,吉林长春130012

出　　处：《高压物理学报》2024年第2期33-42,共10页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(12374007);中国科学院战略性先导科技专项(XDB33000000)。

摘　　要：自从在汞中发现4.2 K的超导转变温度以来,寻找室温超导体一直是凝聚态物理领域的研究热点。近年来,科学家在高压极端条件下发现了以共价型H_(3)S(T_(c)=203 K)和离子型LaH_(10)(T_(c)=250 K)、CaH_(6)(T_(c)=215 K)为代表的系列高温超导体,先后刷新了超导转变温度纪录,这些工作开启了学界在富氢化合物中寻找室温超导体的新篇章。本文重点介绍了目前高压下二元和三元富氢高温超导体的理论模拟以及实验制备和表征方面的相关研究进展,分析在富氢化合物中发现室温超导体面临的挑战和可能途径,为实现室温超导做出基础性贡献。Since the discovery of 4.2 K superconductivity in mercury,the search for room-temperature superconductivity has been a hot topic in the field of condensed matter physics.In recent years,scientists have discovered a series of high-temperature superconductivity,represented by covalent H_3S(superconducting transition temperature T_c=203 K) and ionic LaH_(10) (T_c=250 K) and CaH_(6) (T_c=215 K) under high pressures.These works have successively broken superconducting temperature records,opening a new era in search for room-temperature superconductivity in hydrogen-rich compounds.This paper focuses on the progress of theoretical prediction,experimental synthesis,and characterization in binary and ternary hydrogen-rich superconductors with high critical temperature under high pressure.Furthermore,it addresses the challenges and potential avenues in the quest for room-temperature superconductors in hydrogen-rich compounds.

关 键 词：高压极端条件 富氢超导体 晶体结构预测 金刚石对顶砧 

分 类 号：O521.2[理学—高压高温物理]