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

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

2009-10-19

arxiv.org/abs/0910.3298v1

Phys. Rev. B 81, 115330 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16 pages, 12 figures

Scientific paper

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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