期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到1篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Dual roles of oxygen-annealing in modulating the superconductivity of La3Ni2O7+δ 认领 引用
1
作者 Xin-Ran Hu Jia Yu +17 位作者 Jun-Kun Yi Ya-Dong Gu Jun-Jie Feng Xie-Yu Sun Qing-Song Liu Yun-Qing Shi Meng-Hu Zhou Hui-Ran Sun Chang-Sheng Jiang Qi-Heng Huang Tao Han Ming-Sheng Long Xing-Yuan Hou Bing-Hui Ge Dong-Sheng Song Zhi-An Ren Qing-Ge Mu Lei Shan 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第5期166-174,共9页
Oxygen deficiency is known to critically influence the superconductivity of La3Ni2O7-δ.However,precise control of oxygen content to mitigate such deficiencies remains a significant challenge.In this work,we ... Oxygen deficiency is known to critically influence the superconductivity of La3Ni2O7-δ.However,precise control of oxygen content to mitigate such deficiencies remains a significant challenge.In this work,we synthesized high-oxygencontent La3Ni2O7+δpolycrystals via high-pressure oxygen annealing with the oxygen stoichiometry(δ)successfully tuned by varying the amount of KClO4.The obtained samples La3Ni2O7.16and La3Ni2O7.38exhibit metallic behavior at ambient pressure.We further conducted a comprehensive investigation into the pressure-induced superconductivity and atomic structure.STEM imaging revealed large-area bilayer-phase stacking in La3Ni2O7.16,while La3Ni2O7.38showed noticeable intergrowth with other Ruddlesden-Popper(R-P)phases.Notably,the critical pressure in La3Ni2O7.16is substantially reduced,though its critical temperature(Tc)is lower than that of as-grown samples.In contrast,only a weak superconducting signal was detected in higher oxygen content sample La3Ni2O7.38likely due to the intergrowth with other R-P phases,nonnegligible interstitial oxygen,or an increased fraction of the tetragonal phase.Our findings provide a viable pathway for optimizing nickelate superconductivity and offer insights into the fundamental mechanisms governing superconductivity in these materials. 展开更多
关键词 oxygen-annealing at high pressure La3Ni2O7 high temperature superconductivity high pressure measurements
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈