Phys. Rev. Lett. 91, 136801 (2003) [4 pages]

Enhanced Shot Noise in Resonant Tunneling via Interacting Localized States

Abstract

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S. S. Safonov¹, A. K. Savchenko¹, D. A. Bagrets², O. N. Jouravlev², Y. V. Nazarov², E. H. Linfield³, and D. A. Ritchie³
¹School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL, United Kingdom
²Department of Applied Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
³Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 0HE, United Kingdom

Received 3 March 2003; published 25 September 2003

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 tunneling via localized states. We present a model of correlated transport through two localized states which provides both a qualitative and a quantitative description of this effect.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.91.136801

DOI:

10.1103/PhysRevLett.91.136801

PACS:

73.20.Hb, 72.70.+m, 73.40.Gk

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Phys. Rev. Lett. 91, 136801 (2003) [4 pages]

Enhanced Shot Noise in Resonant Tunneling via Interacting Localized States