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Signatures of tunable Majorana-fermion edge states

Tiwari, Rakesh P. and Zuelicke, U. and Bruder, C.. (2014) Signatures of tunable Majorana-fermion edge states. New journal of physics, Vol. 16 , 025004.

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Official URL: http://edoc.unibas.ch/dok/A6338909

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Abstract

Chiral Majorana-fermion modes are shown to emerge as edge excitations in a superconductor-topological-insulator hybrid structure that is subject to a magnetic field. The velocity of this mode is tunable by changing the magneticfield magnitude and/or the superconductor`s chemical potential. We discuss how quantum-transport measurements can yield experimental signatures of these modes. A normal lead coupled to the Majorana-fermion edge state through electron tunneling induces resonant Andreev reflections from the lead to the grounded superconductor, resulting in a distinctive pattern of differential conductance peaks.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Bruder)
UniBasel Contributors:Bruder, Christoph and Tiwari, Rakesh
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:IOP Publishing
ISSN:1367-2630
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:06 Mar 2015 07:44
Deposited On:06 Mar 2015 07:44

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