Conductance and noise signatures of Majorana backscattering

Suk Bum Chung, Xiao Liang Qi, Joseph MacIejko, Shou Cheng Zhang

Research output: Contribution to journalArticlepeer-review

122 Scopus citations

Abstract

We propose a conductance measurement to detect the backscattering of chiral Majorana edge states. Because normal and Andreev processes have equal probability for backscattering of a single chiral Majorana edge state, there is qualitative difference from backscattering of a chiral Dirac edge state, giving rise to half-integer Hall conductivity and decoupling of fluctuation in incoming and outgoing modes. The latter can be detected through thermal noise measurement. These experimental signatures of Majorana fermions are robust at finite temperature and do not require the size of the backscattering region to be mesoscopic.

Original languageEnglish
Article number100512
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number10
DOIs
StatePublished - 23 Mar 2011

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