论文标题
Kitaev旋转液体中Majorana零模式的扫描隧道光谱
Scanning tunneling spectroscopy of Majorana zero modes in a Kitaev spin liquid
论文作者
论文摘要
我们描述了Kitaev自旋液体中Majorana零模式（MZM）的扫描隧道光谱特征。隧道电导由自旋液体的动力学自旋相关性确定，我们准确地计算出来，以及自旋 - 纳西亚旋转的形式。在$ \ mathbb {z} _2 $涡流附近，隧道电导具有楼梯电压依赖性，其中电导步骤来自MZMS，并且（在更高电压下）来自其他Vortex配置。通过扫描探针尖端位置，可以检测涡流位置。我们的分析表明，拓扑镁结合状态几乎缺陷或磁杂质会产生与MZM质量不同的光谱特征。
We describe scanning tunneling spectroscopic signatures of Majorana zero modes (MZMs) in Kitaev spin liquids. The tunnel conductance is determined by the dynamical spin correlations of the spin liquid, which we compute exactly, and by spin-anisotropic cotunneling form factors. Near a $\mathbb{Z}_2$ vortex, the tunnel conductance has a staircase voltage dependence, where conductance steps arise from MZMs and (at higher voltages) from additional vortex configurations. By scanning the probe tip position, one can detect the vortex locations. Our analysis suggests that topological magnon bound states near defects or magnetic impurities generate spectroscopic signatures that are qualitatively different from those of MZMs.
