论文标题
将Majora零模式捕获在磁纹理晶体的涡流中
Trapping Majorana Zero Modes in Vortices of Magnetic Texture Crystals Coupled to Nodal Superconductors
论文作者
论文摘要
我们提出了一种打开整体能量差距并在节点超导体（SCS）中引起涡流零模式（MZM）的机制。我们表明，通过将感兴趣的鼻子耦合到磁纹理晶体来实现这一可能性。后者由磁纹理的叠加组成，这些磁纹理会根据适当的波向量在空间中定期重复，这些波向量可以在SC的所有节点之间散发自旋散射，从而在其整体能量光谱中打开了一个完整的间隙。在这种情况下，MZM可以被困在磁纹理晶体中引入的自旋或移位涡旋中。我们的方法是通用的，并且适用于旋转刺激， - 三个或 - 混合的配对类型的节点SC。因此，它有望在各种节点SC中找到应用，在各种节点SC中，由于电子电子相互作用，磁纹理要么自发地出现，要么由纳米磁体施加，或者通过耦合到局部磁矩的晶格而诱导。
We propose a mechanism for opening a full bulk energy gap and inducing vortex Majorana zero modes (MZMs) in nodal superconductors (SCs). We show that this becomes possible by coupling the nodal SC of interest to a magnetic texture crystal. The latter consists of superpositions of magnetic textures which repeat periodically in space according to suitable wave vectors that enable spin-flip scattering between all pairs of nodes of the SC, and thus open a full gap in its bulk energy spectrum. In this event, MZMs can be trapped in spin or shift vortices introduced in the magnetic texture crystal. Our approach is generic and applies to nodal SCs of spin-singlet, -triplet, or -mixed type of pairing. Therefore, it promises to find application in a variety of nodal SCs, where the magnetic textures appear either spontaneously due to electron-electron interactions, or are imposed by nanomagnets, or become induced by coupling to a lattice of localized magnetic moments.
