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Mesoscopic fluctuations of tunneling and cotunneling in quantum dots

✍ Scribed by C.M. Marcus; J.A. Folk; S.R. Patel; S.M. Cronenwett; A.G. Huibers; K. Campman; A.C. Gossard

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
151 KB
Volume
23
Category
Article
ISSN
0749-6036

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✦ Synopsis

Recent measurements of mesoscopic tunneling and cotunneling fluctuations in Coulomb blockaded ballistic quantum dots are presented. The statistics and parametric fluctuations (as a function of magnetic field) of Coulomb blockade peak heights are found to be consistent with random-matrix-theory predictions. Mesoscopic fluctuations of elastic cotunneling, measured in the valleys between blockade peaks, are also presented along with a semiclassical explanation of the observed enhancement of the magnetic field scale of cotunneling fluctuations compared to resonant tunneling fluctuations.

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