Theoretical Predictions on Superconducting Phase above Room Temperature in Lutetium-Beryllium Hydrides at High Pressures

作     者：李斌 杨业迁 范雨香 朱聪 刘胜利 施智祥 Bin Li;Yeqian Yang;Yuxiang Fan;Cong Zhu;Shengli Liu;Zhixiang Shi

作者机构：School of ScienceNanjing University of Posts and TelecommunicationsNanjing 210023China College of Electronic and Optical EngineeringNanjing University of Posts and TelecommunicationsNanjing 210023China School of PhysicsSoutheast UniversityNanjing 211189China 

出 版 物：《Chinese Physics Letters》 (中国物理快报(英文版))

年 卷 期：2023年第40卷第9期

页      面：82-86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] 0702[理学-物理学] 

基　　金：supported by the National Key R&D Program of China(Grant No.2018YFA0704300) the National Natural Science Foundation of China(Grant No.U1932217) the StartUp Fund of Nanjing University of Posts and Telecommunications(Grant Nos.NY219087 and NY220038) 

主　　题：superconductivity structure Phase 

摘      要：High-pressure structural search was performed on the hydrogen-rich compound LuBeH8at pressures up to 200 *** found an Fm3m structure that exhibits stability and superconductivity above 100 *** phonon dispersion,electronic band structure,and superconductivity analyses in the 100–200 GPa pressure range reveal a strong electron–phonon coupling in Lu Be H8,while the superconducting critical temperature Tcshows a decreasing trend as the pressure increases,with T_(c)=255 K at 200 GPa and maximal T_(c)=355 K at 100 *** study demonstrated the room-temperature superconductivity in Fm3m thus enriching the family of ternary *** findings provide valuable guidance for identifying new high-temperature superconducting hydrides.