Enhanced shot noise in resonant tunnelling via interacting localised states

TL;DR

This paper reports an unexpected enhancement of shot noise in resonant tunnelling through localized states, supported by a model explaining the correlated transport mechanisms involved.

Contribution

It introduces a model for correlated transport through two localized states that explains the observed shot noise enhancement in resonant tunnelling.

Findings

Shot noise is enhanced in resonant tunnelling via localized states.

The model accurately describes the shot noise behavior.

Provides insights into correlated transport mechanisms.

Abstract

In a variety of mesoscopic systems shot noise is seen to be suppressed in comparison with its Poisson value. In this work we observe a considerable enhancement of shot noise in the case of resonant tunnelling via localised states. We present a model of correlated transport through two localised states which provides both a qualitative and quantitative description of this effect.