Paper Image

Nonlocal suppression of conductance reveals topological Majorana modes

Published on:

3 March 2023

Primary Category:

Mesoscale and Nanoscale Physics

Paper Authors:

Rodrigo A. Dourado,

Poliana H. Penteado,

J. Carlos Egues

Bullets

Key Details

Semiconductor-superconductor nanowires can host Majorana zero modes with nonlocal wavefunctions

In the topological phase, local conductance on one end is nonlocally suppressed by decreasing coupling on the other end

This effect is unique to the topological phase with Majorana modes

By comparing left and right conductance suppression, trivial and topological phases can be distinguished

The proposed protocol uses only local conductance, avoiding issues with weaker nonlocal signals

AI generated summary

Nonlocal suppression of conductance reveals topological Majorana modes

This paper investigates quantum transport in semiconductor-superconductor nanowires that can host Majorana zero modes (MZMs). It finds that the local conductance on one end of the wire is nonlocally suppressed when the coupling to the other end decreases. This effect arises from the nonlocal nature of the MZM wavefunctions, and only occurs in the topological phase. By comparing the suppression of left and right conductances, the authors propose a simplified protocol to distinguish trivial and topological phases using only local conductance measurements.

Answers from this paper

Comments

No comments yet, be the first to start the conversation...

Sign up to comment on this paper

Sign Up