论文标题
三方超导剂 - 铁磁体 - 纳米线的拓扑超导率
Topological superconductivity in tripartite superconductor-ferromagnet-semiconductor nanowires
论文作者
论文摘要
通过最近在三方半导体纳米线中搜索Majorana零模式的动机，该模式具有外观上的超导体和铁磁塑料层，我们探索了三种组成型的范式排列此类设备中拓扑超导的出现。考虑到磁性和超导性之间的竞争，我们始终如一地对待超导性自我，并描述了直接波功能的方法中的电子特性，包括超导和铁磁接近性效应。我们得出的结论是，拓扑超导性最可行的机制依赖于成分的超导型 - 触发器 - feRromagnet布置，在该成分中，在邻近性和超导率的距离中独立诱导了旋转分裂和超导能力，仅受纤维导率的影响，仅受纤维胰蛋白酶的影响。
Motivated by recent experiments searching for Majorana zero modes in tripartite semiconductor nanowires with epitaxial superconductor and ferromagnetic-insulator layers, we explore the emergence of topological superconductivity in such devices for paradigmatic arrangements of the three constituents. Accounting for the competition between magnetism and superconductivity, we treat superconductivity self consistently and describe the electronic properties, including the superconducting and ferromagnetic proximity effects, within a direct wave-function approach. We conclude that the most viable mechanism for topological superconductivity relies on a superconductor-semiconductor-ferromagnet arrangement of the constituents, in which spin splitting and superconductivity are independently induced in the semiconductor by proximity and superconductivity is only weakly affected by the ferromagnetic insulator.
