Shot Noise in Mesoscopic Transport Through Localised States

We show that shot noise can be used for studies of hopping and resonant tunnelling between localised electron states. In hopping via several states, shot noise is seen to be suppressed compared with its classical Poisson value \(S_I=2eI\) (\(I\) is the average current) and the suppression depends on...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2004-02
Main Authors: Savchenko, A K, Safonov, S S, Roshko, S H, Bagrets, D A, Jouravlev, O N, Nazarov, Y V, Linfield, E H, Ritchie, D A
Format: Article
Language:English
Subjects:
Electron states
Electrons
Noise
Shot noise
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We show that shot noise can be used for studies of hopping and resonant tunnelling between localised electron states. In hopping via several states, shot noise is seen to be suppressed compared with its classical Poisson value \(S_I=2eI\) (\(I\) is the average current) and the suppression depends on the distribution of the barriers between the localised states. In resonant tunnelling through a single impurity an enhancement of shot noise is observed. It has been established, both theoretically and experimentally, that a considerable increase of noise occurs due to Coulomb interaction between two resonant tunnelling channels.
ISSN:2331-8422
DOI:10.48550/arxiv.0402145