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arXiv · 2101.02060

Kondo-assisted switching between three conduction states in capacitively coupled quantum dots

Pierre Lombardo·Roland Hayn·Denis Zhuravel·Steffen Schäfer
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Abstract

We propose a nanoscale device consisting of a double quantum dot with strong intra- and inter- dot Coulomb repulsions. In this design, the current can only flow through the lower dot, but is triggered by the gate-controlled occupancy of the upper dot. At low temperatures, our calculations predict the double dot to pass through a narrow Kondo regime, resulting in highly sensitive switching characteristics between three well-defined states : insulating, normal conduction and resonant conduction.

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Pierre Lombardo, Roland Hayn, Denis Zhuravel, Steffen Schäfer. 2021-01-06. Kondo-assisted switching between three conduction states in capacitively coupled quantum dots. https://doi.org/10.1103/physrevresearch.2.033387

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