论文标题
对量子孔 - 渗透杂种系统中下游电导的几何影响
Geometrical effects on the downstream conductance in quantum-Hall--superconductor hybrid systems
论文作者
论文摘要
我们考虑与超导体（SC）接触的量子厅（QH）区域，即QH-SC结。由于连续的Andreev反射，QH-SC界面托管杂交电子和孔边缘状态，称为手性AndreevEdge状态（CAES）。从理论上讲，我们通过使用微观，紧密结合模型来研究这些CAE的传输特性。我们发现传输特性在很大程度上取决于接触几何形状和填充因子的值。我们注意到，在使用有效的一维模型时，有必要在连接处的角处添加局部障碍，以重现此类属性。
We consider a quantum Hall (QH) region in contact with a superconductor (SC), i.e., a QH-SC junction. Due to successive Andreev reflections, the QH-SC interface hosts hybridized electron and hole edge states called chiral Andreev edge states (CAES). We theoretically study the transport properties of these CAES by using a microscopic, tight-binding model. We find that the transport properties strongly depend on the contact geometry and the value of the filling factor. We notice that it is necessary to add local barriers at the corners of the junction in order to reproduce such properties, when using effective one-dimensional models.
