A zero-voltage conductance peak from weak antilocalization in a Majorana nanowire
A zero-voltage conductance peak from weak antilocalization in a Majorana nanowire
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DOI：
10.1088/1367-2630/14/12/125011
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发表时间：
2012-06
影响因子：
3.3
通讯作者：
Dmitry I. Pikulin;J. Dahlhaus;Michael Wimmer;Henning Schomerus;C. Beenakker
中科院分区：
文献类型：
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作者：
Dmitry I. Pikulin;J. Dahlhaus;Michael Wimmer;Henning Schomerus;C. Beenakker
我们表明，无序的弱反局域化与马约拉纳零模式的共振安德烈夫反射竞争，在超导纳米线中产生 e2/h 量级的零电压电导峰值。量子干涉在无序平均中幸存所需的相位共轭是由粒子空穴对称性提供的——在不存在时间反转对称性的情况下，并且不需要拓扑上非平凡的相位。我们确定了区分马约拉纳共振和弱反局域效应的方法。
We show that weak antilocalization by disorder competes with resonant Andreev reflection from a Majorana zero mode to produce a zero-voltage conductance peak of order e2/h in a superconducting nanowire. The phase conjugation needed for quantum interference to survive a disorder average is provided by particle–hole symmetry—in the absence of time-reversal symmetry and without requiring a topologically nontrivial phase. We identify methods of distinguishing the Majorana resonance from the weak antilocalization effect.