Interaction effects on the conductance peak height statistics in quantum dots

Details Interaction effects on the conductance peak height statistics in quantum dots Interaction effects on the conductance peak height statistics in quantum dots

2000-03-15

arxiv.org/abs/cond-mat/0003255v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 eps figures included, RevTex

Scientific paper

A random interaction matrix model is used to study the statistics of conductance peak heights in Coulomb blockade quantum dots. When the single-particle dynamics conserves time-reversal symmetry, the peak height statistics is insensitive to the interaction strength. But when the single-particle dynamics breaks time-reversal symmetry, the peak height statistics exhibits a crossover from unitary to orthogonal symmetry as the interaction strength increases. This crossover is driven by the time-reversal symmetry of the interaction. Our random interaction matrix model describes features of both the measured peak height and peak spacing statistics.

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