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arXiv · 0803.1618

Magnetic field switching in parallel quantum dots

Feng Li·Xin-Qi Li·Wei-Min Zhang·S. A. Gurvitz
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Abstract

We show that the Coulomb blockade in parallel dots pierced by magnetic flux $Φ$ completely blocks the resonant current for any value of $Φ$ except for integer multiples of the flux quantum $Φ_0$. This non-analytic (switching) dependence of the current on $Φ$ arises only when the dot states that carry the current are of the same energy. The time needed to reach the steady state, however, diverges when $Φ\to nΦ_0$.

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Feng Li, Xin-Qi Li, Wei-Min Zhang, S. A. Gurvitz. 2009-10-29. Magnetic field switching in parallel quantum dots. https://doi.org/10.1209/0295-5075%2F88%2F37001

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