论文标题
量子大厅边缘的越过安里弗反射的临界
Criticality in the crossed Andreev reflection of a quantum Hall edge
论文作者
论文摘要
我们开发了一种通过狭窄无序超导体耦合的两个反向传播$ν= 1 $量子厅边缘的非本地运输理论。通过有或没有颗粒孔转换的隧道过程之间的竞争，该系统可以自调为微不足道和拓扑阶段之间的临界点。临界电导是一个随机的，特定于样品的数量，平均值零和异常偏置依赖性。电导的负值相对稳定，而载体密度的变化可能会使临界状态显示为拓扑结构。
We develop a theory of the non-local transport of two counter-propagating $ν= 1$ quantum Hall edges coupled via a narrow disordered superconductor. The system is self-tuned to the critical point between trivial and topological phases by the competition between tunneling processes with or without particle-hole conversion. The critical conductance is a random, sample-specific quantity with a zero average and unusual bias dependence. The negative values of conductance are relatively stable against variations of the carrier density, which may make the critical state to appear as a topological one.
