论文标题
石墨烯中伪landau水平的螺旋超导边缘模式
Helical superconducting edge modes from pseudo-Landau levels in graphene
论文作者
论文摘要
我们在石墨烯的界面和均匀伪磁场的超导体界面上探索Andreev状态。在Zeroth-pseudo Landau级别附近，我们发现拓扑转变是应用Zeeman场的函数，在该范围内出现了无间隙的螺旋模式。只要抑制Intervelley和Spin-Flip散射，这种1D模式就可以免受反向散射。我们讨论了一个可能的实验平台，以检测基于超导体上紧张的悬浮膜的无间隙模式，其中动态应变会导致电荷泵送
We explore Andreev states at the interface of graphene and a superconductor for a uniform pseudo-magnetic field. Near the zeroth-pseudo Landau level, we find a topological transition as a function of applied Zeeman field, at which a gapless helical mode appears. This 1D mode is protected from backscattering as long as intervalley- and spin-flip scattering are suppressed. We discuss a possible experimental platform to detect this gapless mode based on strained suspended membranes on a superconductor, in which dynamical strain causes charge pumping
