论文标题
将量子自旋效应和超导性结合在几层stanene中
Combining quantum spin hall effect and superconductivity in few-layer stanene
论文作者
论文摘要
认为Stanene是一个量子旋转厅绝缘子，其中包含拓扑边缘状态和时间逆转不变的拓扑超导体托管螺旋Majorana边缘模式。最近，在单层Stanene膜中发现了拓扑边缘状态存在的实验证据，并且在不包括单层（单层）的几层Stanene膜中观察到了超导性。具有拓扑边缘状态和超导性的集成系统被追求是实现拓扑超导性的可能平台。几层Stanene具有满足这一要求的巨大潜力，并且在实验中非常需要。在这里，我们成功地在Bismuth（111）底物上生长了很少的Stanene。通过原位扫描隧道显微镜/光谱法（STM/STS）可以观察到拓扑边缘状态和超导间隙。我们的结果进一步迈向了Stanene膜的拓扑超导性。
Stanene was proposed to be a quantum spin hall insulator containing topological edges states and a time reversal invariant topological superconductor hosting helical Majorana edge mode. Recently, experimental evidences of existence of topological edge states have been found in monolayer stanene films and superconductivity has been observed in few-layer stanene films excluding single layer. An integrated system with both topological edge states and superconductivity are higly pursued as a possible platform to realize topological superconductivity. Few-layer stanene show great potential to meet this requirement and is highly desired in experiment. Here we successfully grow few-layer stanene on bismuth (111) substrate. Both topological edge states and superconducting gaps are observed by in-situ scanning tunneling microscopy/spectroscopy (STM/STS). Our results take a further step towards topological superconductivity by stanene films.
