论文标题
在微小磁场处的三相Majora零模式
Three-phase Majorana zero modes at tiny magnetic fields
论文作者
论文摘要
实现凝结物质系统中的主要费物的建议通常依赖于磁场，该磁场会降低临近超导体的降解并捕获Mapoaranas的检测。我们提出了一个仅基于相位偏置超导体的主要方案，以实现Maporanas。相位（至少三个）可能会因微小的磁场螺纹宏观超导回路而偏置，从而聚焦并增强磁场对结或超电流的效果。我们展示了在闭环（Aharonov-Casher效应）中诱导的超导相位绕组和自旋轨相的组合如何促进Majorana端状态的拓扑超导状态。我们通过一个可分析的模型以及仅包含常规材料的现实设置进行了将该方案进行对比。
Proposals for realizing Majorana fermions in condensed matter systems typically rely on magnetic fields, which degrade the proximitizing superconductor and plague the Majoranas' detection. We propose an alternative scheme to realize Majoranas based only on phase-biased superconductors. The phases (at least three of them) can be biased by a tiny magnetic field threading macroscopic superconducting loops, focusing and enhancing the effect of the magnetic field onto the junction, or by supercurrents. We show how a combination of the superconducting phase winding and the spin-orbit phase induced in closed loops (Aharonov-Casher effect) facilitates a topological superconducting state with Majorana end states. We demontrate this scheme by an analytically tractable model as well as simulations of realistic setups comprising only conventional materials.
