Conductance asymmetry in proximitized magnetic topological insulator junctions with Majorana modes
Mesoscale and Nanoscale Physics
2023-08-02 v2
Abstract
We theoretically discuss electronic transport via Majorana states in magnetic topological insulator-superconductor junctions with an asymmetric split of the applied bias voltage. We study normal-superconductor-normal (NSN) junctions made of narrow (wire-like) or wide (film-like) magnetic topological insulator slabs with a central proximitized superconducting sector. The occurrence of charge non-conserving Andreev processes entails a nonzero conductance related to an electric current flowing to ground from the proximitized sector of the NSN junction. We show that topologically-protected Majorana modes require an antisymmetry of this conductance with respect to the point of equally split bias voltage across the junction.
Keywords
Cite
@article{arxiv.2303.16261,
title = {Conductance asymmetry in proximitized magnetic topological insulator junctions with Majorana modes},
author = {Daniele Di Miceli and Eduárd Zsurka and Julian Legendre and Kristof Moors and Thomas Schmidt and Llorenç Serra},
journal= {arXiv preprint arXiv:2303.16261},
year = {2023}
}