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Abstract

Distributions of Coulomb blockade peak spacing are reported for large ensembles of both unbroken (magnetic field B = 0) and broken (B ≠ 0) time reversal symmetry in GaAs quantum dots. Both distributions are symmetric and roughly gaussian with a width ~ 2–6% of the average spacing, with broad, non-gaussian tails. The distribution is systematically wider at B… (More)

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