Shot Noise in Mesoscopic Transport Through Localised States

Abstract

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.

arXiv comment7 pages, 5 figures; Proceedings of the 10th Conference on Hopping and Related Phenomena (Trieste 2003); requires Wiley style files (included)

References in corpus (4)

• Shot Noise in Mesoscopic Conductors
• The 1/3-shot noise suppression in diffusive nanowires
• Shot noise suppression at 1D hopping
• Shot noise at hopping via two sites

Cited by in corpus (6)

• Mesoscopic Full Counting Statistics and Exclusion models
• Shot Noise Suppression and Hopping Conduction in Graphene Nanoribbons
• A Numerical Study of Transport and Shot Noise at 2D Hopping
• Finite frequency backscattering current noise at a helical edge
• A Numerical Study of Coulomb Interaction Effects on 2D Hopping Transport
• Finite-size effect in shot noise in hopping conduction