基于Yu-Shiba-Rusinov态的拓扑超导理论  

Theory of topological superconductivity based on Yu-Shiba-Rusinov states

作　　者：李牮 Li Jian(School of Science,Westlake University,Hangzhou 310024,China;Institute of Natural Sciences,Westlake Institute for Advanced Study,Hangzhou 310024,China)

机构地区：[1]西湖大学理学院,杭州310024 [2]浙江西湖高等研究院理学研究所,杭州310024

出　　处：《物理学报》2020年第11期253-258,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11774317)资助的课题.

摘　　要：Yu-Shiba-Rusinov态是由磁性杂质原子在超导体中诱导出的超导能隙内的束缚态.它们可以作为构造拓扑超导态的基本单元.本文阐述了基于Yu-Shiba-Rusinov态的不同维度拓扑超导的统一理论框架,并通过简单的特例加以解释.这里的理论是理解多个相关实验的基础.Yu-Shiba-Rusinov states are subgap bound states induced by magnetic impurity atoms in a superconductor.These states can be used as building blocks in constructing an effective topological superconductor.Here we formulate a unified theory of topological superconductivity in different dimensions based on Yu-Shiba-Rusinov states,and demonstrate its application with simple but illustrative examples.Such a theory underlies a number of recent experiments on the related platform.

关 键 词：拓扑相 拓扑超导体 马约拉纳费米子 磁性杂质 Yu-Shiba-Rusinov态 

分 类 号：O469[理学—凝聚态物理]