Non-Gaussian distribution of nearest-neighbour Coulomb peak spacings in metallic single electron transistors
arXiv:cond-mat/9909122 · doi:10.1209/epl/i2000-00158-3
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.
submitted to Europhys. Lett