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Non-Gaussian distribution of nearest-neighbour Coulomb peak spacings in metallic single electron transistors

M. Furlan·T. Heinzel·B. Jeanneret·S. V. Lotkhov·K. Ensslin
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Abstract

The distribution of nearest-neighbour spacings of Coulomb blockade oscillation peaks in normal conducting aluminum single electron transistors is found to be non-Gaussian. A pronounced tail to reduced spacings is observed, which we attribute to impurity-specific parametric charge rearrangements close to the transistor. Our observation may explain the absence of a Wigner-Dyson distribution in the experimental nearest-neighbour spacing distributions in semiconductor quantum dots.

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M. Furlan, T. Heinzel, B. Jeanneret, S. V. Lotkhov, K. Ensslin. 1999-09-08. Non-Gaussian distribution of nearest-neighbour Coulomb peak spacings in metallic single electron transistors. https://doi.org/10.1209/epl%2Fi2000-00158-3

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