论文标题
手性majoraga模式通过靠近扭曲的铜层双层
Chiral Majorana Modes via Proximity to a Twisted Cuprate Bilayer
论文作者
论文摘要
我们提出了一种新型的异质结构，以实现2D的手性拓扑超导性。带有较大Rashba自旋轨耦合能的底物与从高温铜酸盐超导体中剥落的薄膜的扭曲双层相邻。然后将组合系统暴露于平面外磁场。预计将在这种系统中发生的稀有$ D + ID $配对对称性允许进行非平凡的拓扑。具体而言，与扭曲的双层隔离的情况相反，底物引起了奇数的Chern数。所得阶段的特征是每个涡流中存在Majorana零模式。
We propose a novel heterostructure to achieve chiral topological superconductivity in 2D. A substrate with a large Rashba spin-orbit coupling energy is brought in proximity to a twisted bilayer of thin films exfoliated from a high-temperature cuprate superconductor. The combined system is then exposed to an out-of-plane magnetic field. The rare $d + id$ pairing symmetry expected to occur in such a system allows for nontrivial topology; specifically, in contrast to the case of the twisted bilayer in isolation, the substrate induces an odd Chern number. The resulting phase is characterized by the presence of a Majorana zero mode in each vortex.
