论文标题
正向声子散射的拓扑超导性
Topological Superconductivity From Forward Phonon Scatterings
论文作者
论文摘要
我们提出了一种新的无Rishba机制，以实现电子 - phonon相互作用的拓扑超导性。在存在磁场的情况下，发现具有较小动量转移的电子波相互作用有利于自旋三曲库珀配对。即使没有Rashba自旋轨道耦合，此过程也有助于手性拓扑超导的形成。作为概念的证明，我们提出了一个实验可行的异质结构，以系统地研究前向散射，rashba旋转轨道耦合，配对对称性和超导拓扑之间的纠缠关系。我们的理论阐明了电子 - 音波耦合材料在追求非亚伯岛主要准粒子中的重要作用。
We propose a new Rashba-free mechanism to realize topological superconductivity with electron-phonon interaction. In the presence of a magnetic field, electron-phonon interaction with small momentum transfer is found to favor spin-triplet Cooper pairing. This process facilitates the formation of chiral topological superconductivity even when Rashba spin-orbital coupling is absent. As a proof of concept, we propose an experimentally feasible heterostructure to systematically study the entangled relationship among forward-phonon scatterings, Rashba spin-orbital couplings, pairing symmetries, and superconducting topology. Our theory sheds light on the important role of electron-phonon coupled materials in the pursuit of non-Abelian Majorana quasiparticles.
