论文标题
FESE $ _ {0.45} $ te $ _ {0.55} $中的竞争拓扑超导阶段
Competing topological superconducting phases in FeSe$_{0.45}$Te$_{0.55}$
论文作者
论文摘要
我们证明，最近通过角度分辨的光发射光谱实验为存在两个相互竞争的拓扑超导阶段提供了有力的证据。它们的潜在显微镜机制的耦合（一种基于三维拓扑绝缘子，一种基于二维超导性 - 在广泛的参数上稳定拓扑超导性，并在FESE $ _ $ _ $ _ $ _ $ _ $ _ {0.45 $ _______________________的相位图中引起两个不一致的拓扑区域。我们表明，可以通过考虑域壁上的Majorana边缘模式的形式来识别这些区域的拓扑起源。
We demonstrate that recent angle-resolved photo-emission spectroscopy experiments provide strong evidence for the existence of two competing topological superconducting phases in FeSe$_{0.45}$Te$_{0.55}$. The coupling of their underlying microscopic mechanisms -- one based on a three-dimensional topological insulator, one based on two-dimensional superconductivity -- stabilizes topological superconductivity over a wide range of parameters, and gives rise to two disjoint topological regions in the phase diagram of FeSe$_{0.45}$Te$_{0.55}$. We show that the topological origin of these regions can be identified by considering the form of Majorana edge modes at domain walls.
