基于Yu-Shiba-Rusinov态的拓扑超导理论

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

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.