Detection of Majorana fermions in an Aharonov-Bohm interferometer

doi:10.1088/1674-1056/23/5/057201

Abstract By using the non-equilibrium Green's function technique, we investigate the electronic transport properties in an Aharonov-Bohm interferometer coupling with Majorana fermions. We find a fixed unit conductance peak which is independent of the other factors when the topological superconductor is grounded. Especially, an additional phase appears when the topological superconductor is in the strong Coulomb regime, which induces a new conductance resonant peak compared with the structure of replacing the topological superconductor by a quantum dot, and the conductance oscillation with the magnetic flux reveals a 2π phase shift by raising (lowering) a charge on the capacitor.

Keywords: Majorana fermion quantum dot Aharonov-Bohm interferometer Coulomb blockade

Received: 17 August 2013
Revised: 21 October 2013
Accepted manuscript online:

PACS:	72.10.Fk	(Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect))
	73.63.-b	(Electronic transport in nanoscale materials and structures)
	85.75.-d	(Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CB922103).

Corresponding Authors: Shang En-Ming
E-mail: shangjin0491@163.com

About author: 72.10.Fk; 73.63.-b; 85.75.-d

Cite this article:

Shang En-Ming (尚恩明), Pan Yi-Ming (潘义明), Shao Lu-Bing (邵陆兵), Wang Bai-Gen (王伯根) Detection of Majorana fermions in an Aharonov-Bohm interferometer 2014 Chin. Phys. B 23 057201

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Detection of Majorana fermions in an Aharonov-Bohm interferometer

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