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Conductance Peak Distributions in Quantum Dots and the Crossover between Orthogonal and Unitary Symmetries

Y. Alhassid, J. N. Hormuzdiar, N. D. Whelan

cond-matarXiv:cond-mat/9609115

Abstract

Closed expressions are derived for the resonance widths and Coulomb blockade conductance peak heights in quantum dots for the crossover regime between conserved and broken time-reversal symmetry. The results hold for leads with any number of possibly correlated and inequivalent channels. Our analytic predictions are in good agreement with simulations of both random matrices and a chaotic billiard with a magnetic flux line.

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