论文标题
通过Andreev分子状态在石墨烯Josephson连接中的非本地Andreev反射
Non-local Andreev reflection through Andreev molecular states in graphene Josephson junctions
论文作者
论文摘要
我们提出，由两个垂直堆叠的单层石墨烯约瑟夫森连接组成的设备可用于库珀对分裂。两个约瑟夫森连接的Andreev结合状态的杂交可以促进这种正常抗渗透导体杂交结构中的非局部转运，我们通过计算非局部差分电导来研究。假设一个石墨烯层是电子，另一个是掺杂的孔，我们发现非本地Andreev反射可以主导系统的差分电导。我们的设置不需要精确控制连接长度，掺杂或超导相位差，这可能是实验实现的重要优势。
We propose that a device composed of two vertically stacked monolayer graphene Josephson junctions can be used for Cooper pair splitting. The hybridization of the Andreev bound states of the two Josephson junction can facilitate non-local transport in this normal-superconductor hybrid structure, which we study by calculating the non-local differential conductance. Assuming that one of the graphene layers is electron and the other is hole doped, we find that the non-local Andreev reflection can dominate the differential conductance of the system. Our setup does not require the precise control of junction length, doping, or superconducting phase difference, which could be an important advantage for experimental realization.
