论文标题
磁性稳定的零偏置异常在Andreev接触到磁性Weyl半学公司$ _3 $ sn $ _2 $ s $ _2 $
Magnetically stable zero-bias anomaly in Andreev contact to the magnetic Weyl semimetal Co$_3$Sn$_2$S$_2$
论文作者
论文摘要
受到拓扑，超导性和磁性之间的相互作用的鼓励，我们通过NB超导体与时间反转对称性破坏Weyl Semimetal Co $ _3 $ _3 $ sn $ _2 $ _2 $ _2 $ s $ _2 $。除了接近诱导的超导间隙外，我们还观察到几个子段特征，其中最有趣的是突出的零偏置异常，在NB临界场上，在外部磁场上绝对稳定。作为零偏置异常出现在运输特征中的有前途的方案，我们考虑了近距离诱导的零能量的Andereev Bound状态与半金属CO $ _3 $ _3 $ _3 $ _2 $ _2 $ _2 $ s $ _2 $相连，并受到强大的Spin-Orbit量式式式式Zepling和大型Zeman的影响。
Being encouraged by the interplay between topology, superconductivity and magnetism, we experimentally investigate charge transport through the interface between the Nb superconductor and the time-reversal symmetry breaking Weyl semimetal Co$_3$Sn$_2$S$_2$. In addition to the proximity induced superconducting gap, we observe several subgap features, among which the most interesting is the prominent subgap zero-bias anomaly, absolutely stable against external magnetic fields up to the critical field of Nb. As the promising scenario for the zero-bias anomaly to appear in transport characteristics, we consider the proximity induced zero-energy Andreev bound states interfaced with the half-metallic Co$_3$Sn$_2$S$_2$ and influenced by the strong spin-orbit coupling and large Zeeman splitting.
