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arXiv · 1103.1837

Kondo temperature of a quantum dot

Seungjoo Nah·Michael Pustilnik
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Abstract

We study the dependence of the Kondo temperature on the gate voltage in a strongly blockaded quantum dot with a small single-particle level spacing. We show that the dependence cannot be fitted to that of the Anderson impurity model with the gate voltage-independent level width. The effect originates in high-order tunneling processes, which make a dominant contribution to the exchange amplitude when the gate voltage is tuned away from the middle of the Coulomb blockade valley.

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Seungjoo Nah, Michael Pustilnik. 2012-06-13. Kondo temperature of a quantum dot. https://doi.org/10.1103/physrevb.85.235311

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