Noise as a probe of Majorana fermion surface states

TL;DR

This paper investigates the electrical noise characteristics of Majorana fermion surface states, proposing noise measurement as a definitive method to confirm their existence, supported by theoretical calculations and experimental comparisons.

Contribution

It introduces noise analysis as a novel approach to detect Majorana fermions, expanding beyond traditional current-voltage measurements.

Findings

Current-voltage characteristics match experimental data

Calculated noise signatures support Majorana fermion presence

Noise could serve as an ultimate proof of Majorana states

Abstract

The emergence of Majorana fermion surface states has been studied in several environments. In this paper we discuss the current-voltage characteristics of a Majorana fermion state as a function of the voltage, temperature and magnetic field and compare the results to experiment. Based on the agreement and identified parameters we calculate the noise as a possible ultimate proof of the emergence of Majorana fermions.