Interferometric and noise signatures of Majorana fermion edge states in transport experiments

Grégory Strübi, Wolfgang Belzig, Mahn-Soo Choi, C. Bruder

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Domain walls between superconducting and magnetic regions placed on top of a topological insulator support transport channels for Majorana fermions. We propose to study noise correlations in a Hanbury Brown-Twiss type interferometer and find three signatures of the Majorana nature of the channels. First, the average charge current in the outgoing leads vanishes. Furthermore, we predict an anomalously large shot noise in the output ports for a vanishing average current signal. Adding a quantum point contact to the setup, we find a surprising absence of partition noise which can be traced back to the Majorana nature of the carriers.

Original languageEnglish
Article number136403
JournalPhysical Review Letters
Volume107
Issue number13
DOIs
Publication statusPublished - 2011 Sep 23

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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