Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1999-09-08
Europhys. Lett. 49 (3), pp. 369-375 (2000)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
submitted to Europhys. Lett
Scientific paper
10.1209/epl/i2000-00158-3
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.
Ensslin Klaus
Furlan Miha
Heinzel Thomas
Jeanneret B.
Lotkhov Sergey V.
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