论文标题
通过库仑封锁Majorana电线的传输幅度
Transmission Amplitude through a Coulomb blockaded Majorana Wire
论文作者
论文摘要
我们通过在电导共振之间的共同驾驶状态中通过库仑封锁的超导rashba线来研究相干电子传输。通过改变外部Zeeman场，可以将电线调整为拓扑状态，在该拓扑状态下，通过Majorana零模式的非本地运输是主要机制。我们通过使用散射矩阵形式主义在共同隧道中建模相干传输，并发现透射振幅的最大值是Zeeman场的函数，Zeeman场的高度与电线长度成正比。我们将传输幅度与Majoraana相关长度联系起来，并认为传输幅度的Zeeman场和长度依赖性是Majorana零模式存在的独特签名。
We study coherent electronic transport through a Coulomb blockaded superconducting Rashba wire in the co-tunneling regime between conductance resonances. By varying an external Zeeman field the wire can be tuned into a topological regime, where non-local transport through Majorana zero modes is the dominant mechanism. We model coherent transport in the co-tunneling regime by using a scattering matrix formalism, and find that the transmission amplitude has a maximum as a function of Zeeman field, whose height is proportional to the wire length. We relate the transmission amplitude to the Majorana correlation length, and argue that the Zeeman field and length dependence of the transmission amplitude are unique signatures for the presence of Majorana zero modes.
