Probing Neutral Majorana Fermion Edge Modes with Charge Transport

被引：468

作者：

Fu, Liang ^{[1
]}

Kane, C. L. ^{[1
]}

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 21期

关键词：

QUANTUM; STATES;

D O I：

10.1103/PhysRevLett.102.216403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose two experiments to probe the Majorana fermion edge states that occur at a junction between a superconductor and a magnet deposited on the surface of a topological insulator. Combining two Majorana fermions into a single Dirac fermion on a magnetic domain wall allows the neutral Majorana fermions to be probed with charge transport. We will discuss a novel interferometer for Majorana fermions, which probes their Z(2) phase. This setup also allows the transmission of neutral Majorana fermions through a point contact to be measured. We introduce a point contact formed by a superconducting junction and show that its transmission can be controlled by the phase difference across the junction. We discuss the feasibility of these experiments using the recently discovered topological insulator Bi2Se3.

引用

页数：4

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