Tunneling between helical Majorana modes and helical Luttinger liquids

Sung Po Chao, Thomas L. Schmidt, Chung-Hou Chung

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We propose and study the charge transport through single and double quantum point contacts setup between helical Majorana modes and an interacting helical Luttinger liquid. We show that the differential conductance decreases for stronger repulsive interactions and that the point contacts become insulating above a critical interaction strength. For a single-point contact, the differential conductance as a function of bias voltage shows a series of peaks due to Andreev reflection of electrons in the Majorana modes. In the case of two point contacts, interference phenomena make the structure of the individual resonance peaks less universal and show modulations with different separation distance between the contacts. For small separation distance, the overall features remain similar to the case of a single-point contact.

Original languageEnglish
Article number235125
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number23
DOIs
StatePublished - 12 Jun 2015

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