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Shot noise as a probe of electron transport via localised states in sub‐micrometer barriers
Author(s) -
Savchenko A. K.,
Safonov S. S.,
Roshko S. H.,
Bagrets D. A.,
Jouravlev O. N.,
Nazarov Y. V.,
Linfield E. H.,
Ritchie D. A.
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200460770
Subject(s) - shot noise , quantum tunnelling , electron , coulomb , noise (video) , physics , condensed matter physics , shot (pellet) , atomic physics , materials science , quantum mechanics , optics , detector , artificial intelligence , computer science , metallurgy , image (mathematics)
Abstract We show that shot noise is a useful tool in studies of electron transport in hopping and resonant tunnelling between localised states. In resonant tunnelling through a single impurity we observe an enhancement of shot noise caused by Coulomb interaction between two resonant channels. In hopping along chains of localised states, shot noise is shown to be sensitive to the distribution of the barriers between the states and the Coulomb interaction between hopping electrons. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)