Shot noise in a Majorana fermion chain

被引：61

作者：

Golub, Anatoly ^{[1
]}

Horovitz, Baruch ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 15期

基金：

以色列科学基金会;

关键词：

D O I：

10.1103/PhysRevB.83.153415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We calculate the shot noise power in a junction of a network of Majorana bound states (MBSs) with a normal metal. These Majorana bound states are on the borders of alternating ferromagnetic and superconducting regions at the quantum spin Hall insulator edge. We analyze different realizations of MBS networks including a few isolated ones and those in a chain allowing for the limits of weak and strong tunneling. The conductance and the shot noise are considerably stronger than those of a weakly coupled normal-superconducting junction, which is a hallmark of the MBS. We find that the Fano factor is quantized, F = 2, when one MBS member of a pair is coupled to the lead; however, if both MBS members are coupled F is noninteger.

引用

页数：4

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