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arXiv · 0910.3298

Kondo effect in Complex Quantum Dots in the presence of an oscillating and fluctuating gate signal

M. N. Kiselev·K. Kikoin·J. Richert
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Abstract

We show how the charge input signal applied to the gate electrode in a double and triple quantum dot may be converted to a pulse in the Kondo cotunneling current being a spin response of a nano-device under a strong Coulomb blockade. The stochastic component of the input signal results in the infrared cutoff of Kondo transmission. The stochastization of the orbital component of the Kondo effect in triple quantum dots results in a noise-induced SU(4) - SU(2) quantum transition.

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M. N. Kiselev, K. Kikoin, J. Richert. 2009-10-19. Kondo effect in Complex Quantum Dots in the presence of an oscillating and fluctuating gate signal. https://doi.org/10.1103/physrevb.81.115330

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