Abstract
We develop a statistical theory of the amplitude of Coulomb blockade and resonant tunneling oscillations in semiconductor quantum dots based on the hypothesis that chaotic dynamics in the dot potential leads to behavior described by random matrix theory. We obtain a universal one-parameter distribution describing the fluctuations of the resonance amplitudes in the regime where a single thermally-broadened level dominates. As with other mesoscopic fluctuation phenomena, changing the fundamental symmetries of the dot hamiltonian(e.g. breaking time-reversal symmetry with a weak magnetic field) leads to changes in this distribution which should have experimentally-observable effects. The theory is tested numerically by calculating the resonance-width distribution of a very weakly disordered ensemble of dots and good agreement is found.
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Stone, A.D., Jalabert, R.A., Alhassid, Y. (1992). Statistical Theory of Coulomb Blockade and Resonant Tunneling Oscillations in Quantum Dots. In: Fukuyama, H., Ando, T. (eds) Transport Phenomena in Mesoscopic Systems. Springer Series in Solid-State Sciences, vol 109. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84818-6_4
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DOI: https://doi.org/10.1007/978-3-642-84818-6_4
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