论文标题
晶体各向异性拓扑超导在平面约瑟夫森连接处
Crystalline Anisotropic Topological Superconductivity in Planar Josephson Junctions
论文作者
论文摘要
从理论上讲，在经旋转轨道耦合和平面磁场的情况下，相位控制的平面约瑟夫森连接（JJS）中拓扑相变的晶体各向异性。它显示了拓扑超导性（TS）如何受到磁场和连接方向相对于其晶体学轴的相互作用的影响。该相互作用可用于以受控的方式在不同的对称类别之间进行电气调整，从而优化了在平面约瑟夫森连接处的主要结合状态的稳定性和定位。我们的发现可以用作实现最有利条件的指南，当时在平面JJ中进行工程TS，并且与包含非共线连接处的设置特别相关，这些设置提出了用于在多个Majoraana对进行编织操作的提议。
We theoretically investigate the crystalline anisotropy of topological phase transitions in phase-controlled planar Josephson junctions (JJs) subject to spin-orbit coupling and in-plane magnetic fields. It is shown how topological superconductivity (TS) is affected by the interplay between the magnetic field and the orientation of the junction with respect to its crystallographic axes. This interplay can be used to electrically tune between different symmetry classes in a controlled fashion and thereby optimize the stability and localization of Majorana bound states in planar Josephson junctions. Our findings can be used as a guide for achieving the most favorable conditions when engineering TS in planar JJs and can be particularly relevant for setups containing non-collinear junctions which have been proposed for performing braiding operations on multiple Majorana pairs.
