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2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：
Coexistence of near-EF Van Hove Singularity and in-Gap Topological Dirac Surface States in Superconducting Electrides 认领 引用
1
作者 Yin Yang Peihan Sun +9 位作者 Ye Shen Zhijun Tu Pengcheng Ma Hongrun Zhen Tianqi Wang Longli Tian Tian Cui Hechang Lei Kai Liu Zhonghao Liu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第1期213-217,共5页
Superconducting elect rides have attracted growing attention for their potential to achieve high superconducting transition temperatures(TC)under pressure.However,many known elect rides are chemically reactive and ... Superconducting elect rides have attracted growing attention for their potential to achieve high superconducting transition temperatures(TC)under pressure.However,many known elect rides are chemically reactive and unstable,making high-quality single-crystal growth,characterization,and measurements difficult,and most do not exhibit superconductivity at ambient pressure.In contrast,La3 In stands out for its ambient-pressure superconductivity(TC∼9.4 K)and the availability of high-quality single crystals.Here,we investigate its low-energy electronic structure using angle-resolved photoemission spectroscopy and first-principles calculations.The bands near the Fermi energy(EF)are mainly derived from La 5d and In 5p orbitals.A saddle point is directly observed at the Brillouin zone(BZ)boundary,while a three-dimensional Van Hove singularity crosses EF at the BZ corner.First-principles calculations further reveal topological Dirac surface states within the bulk energy gap above EF.The coexistence of a high density of states and in-gap topological surface states nearF suggests that La3In offers a promising platform for tuning superconductivity and exploring possible topological superconducting phases through doping or external pressure. 展开更多
关键词 ambient pressure superconductivity superconducting elect rides gap topological Dirac surface states La superconducting electrides near efVan Hove singularity angle resolved photoemission spectroscopy elect rides
暂未订购 下载PDF
Superconductivity in Cubic La3Al with Interstitial Anionic Electrons 认领 引用
2
作者 Zhijun Tu Peihan Sun +3 位作者 Donghan Jia Huiyang Gou Kai Liu Hechang Lei 《Chinese Physics Letters》 SCIE EI CAS CSCD 2025年第2期88-97,共10页
We observed superconductivity in a cubic La3Al single crystal that exhibits metallic behavior in the normal state without an observable structural transition and enters the superconducting state below Tc~6.32 K.... We observed superconductivity in a cubic La3Al single crystal that exhibits metallic behavior in the normal state without an observable structural transition and enters the superconducting state below Tc~6.32 K.Detailed characterization and analysis indicate that cubic La3Al is a bulk type-Ⅱ BCS superconductor.Moreover,theoretical calculations show that it can host interstitial anionic electrons located at the body center of the cubic unit cell,which confirms electron-phonon coupling as the superconducting mechanism.Therefore,cubic La3Al can be considered as a novel electride superconductor. 展开更多
关键词 mechanism cubic
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