论文标题
基于铁的超导体中的自旋极化Yu-Shiba-Rusinov状态
Spin-polarized Yu-Shiba-Rusinov states in an iron based superconductor
论文作者
论文摘要
当磁原子与超导体相互作用时，Yu-Shiba-Rusinov（YSR）结合状态出现。在这里，我们使用自旋极化扫描隧道显微镜的YSR状态的自旋分辨光谱研究与沉积在拓扑超导体FETE的表面上的Fe原子相关。我们清楚地确定了在从理论上预测的超导差距中具有相反自旋极化的超导间隙内的有限差距的YSR结合状态对的自旋特征。此外，我们还观察到一些吸附的Fe原子的零能量状态。在这种情况下，发现没有旋转特征表明与FETE0.55SE0.45上的Fe Atatoms相关的主要结合状态。
Yu-Shiba-Rusinov (YSR) bound states appear when a magnetic atom interacts with a superconductor. Here, we report on spin-resolved spectroscopic studies of YSR states related with Fe atoms deposited on the surface of the topological superconductor FeTe0.55Se0.45 using a spin-polarized scanning tunneling microscope. We clearly identify the spin signature of pairs of YSR bound states at finite energies within the superconducting gap having opposite spin polarization as theoretically predicted. In addition, we also observe zero-energy bound states for some of the adsorbed Fe atoms. In this case, a spin signature is found to be absent indicating the absence of Majorana bound states associated with Fe adatoms on FeTe0.55Se0.45.
