Cotunneling effects in GaAs vertical double quantum dot
A.O. Badrutdinov, S. M. Huang, K. Kono, K. Ono, D. A. Tayurskii
TL;DR
This paper investigates cotunneling effects in GaAs vertical double quantum dots, revealing Coulomb blockade lifting at ultra-low temperatures and providing explanations for observed phenomena distinct from single-dot systems.
Contribution
It presents experimental observations of cotunneling-induced Coulomb blockade lifting in double quantum dots and offers explanations for features not seen in single-dot systems.
Findings
Coulomb blockade is lifted by cotunneling at 10 mK.
Distinct features are observed compared to single quantum dots.
The paper provides explanations for these features.
Abstract
We observed lifting of Coulomb blockade in GaAs vertical double quantum dot with low potential barriers, induced by cotunneling mechanisms at dilution fridge temperature of 10 mK. Several distinct features were observed, compared to single dot case, and appropriate explanation for them was given
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