论文标题
候选拓扑超导体AU2PB表面状态和带状结构的超导密度
Superconducting density of states and bandstructure at the surface of the candidate topological superconductor Au2Pb
论文作者
论文摘要
Au $ _2 $ PB的电子带结构具有狄拉克锥体，该圆锥体在结构过渡到低温超导阶段时会差距。这表明超导阶段（$ t_c = 1.1 $ k）可能在表面具有拓扑特性。在这里，我们在超导AU $ _2 $ pb的表面进行扫描隧道显微镜实验。我们测量超导差距，并在费米水平上找到状态的较大的超导密度。我们讨论了这一发现的可能起源，从诱导到表面状态的超导性方面。
The electronic bandstructure of Au$_2$Pb has a Dirac cone which gaps when undergoing a structural transition into a low temperature superconducting phase. This suggests that the superconducting phase ($T_c=1.1$ K) might hold topological properties at the surface. Here we make Scanning Tunneling Microscopy experiments on the surface of superconducting Au$_2$Pb. We measure the superconducting gap and find a sizeable superconducting density of states at the Fermi level. We discuss possible origins for this finding in terms of superconductivity induced into surface states.
