Magnetic field switching in parallel quantum dots

Details Magnetic field switching in parallel quantum dots Magnetic field switching in parallel quantum dots

2008-03-11

arxiv.org/abs/0803.1618v2

EPL 88, 37001 (2009)

Physics

Condensed Matter

Other Condensed Matter

additional explanations added, Europhysics Letters, in press

Scientific paper

We show that the Coulomb blockade in parallel dots pierced by magnetic flux $\Phi$ completely blocks the resonant current for any value of $\Phi$ except for integer multiples of the flux quantum $\Phi_0$. This non-analytic (switching) dependence of the current on $\Phi$ 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 $\Phi\to n\Phi_0$.

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