Statistics of Coulomb blockade peak spacings for a partially open dot

Details Statistics of Coulomb blockade peak spacings for a partially open dot Statistics of Coulomb blockade peak spacings for a partially open dot

1999-11-16

arxiv.org/abs/cond-mat/9911243v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 1 figure

Scientific paper

10.1103/PhysRevB.61.15927

We show that randomness of the electron wave functions in a quantum dot contributes to the fluctuations of the positions of the conductance peaks. This contribution grows with the conductance of the junctions connecting the dot to the leads. It becomes comparable with the fluctuations coming from the randomness of the single particle spectrum in the dot while the Coulomb blockade peaks are still well-defined. In addition, the fluctuations of the peak spacings are correlated with the fluctuations of the conductance peak heights.

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