Magnetic field switching in parallel quantum dots

Feng Li; Xin Qi Li; Wei Min Zhang; S. A. Gurvitz

doi:10.1209/0295-5075/88/37001

Magnetic field switching in parallel quantum dots

Feng Li, Xin Qi Li, Wei Min Zhang, S. A. Gurvitz

Department of Physics

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

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 Φ₀. 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→nΦ₀.

Original language	English
Article number	37001
Journal	EPL
Volume	88
Issue number	3
DOIs	https://doi.org/10.1209/0295-5075/88/37001
Publication status	Published - 2009 Nov

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1209/0295-5075/88/37001

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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 Φ0. 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→nΦ0.",

author = "Feng Li and Li, {Xin Qi} and Zhang, {Wei Min} and Gurvitz, {S. A.}",

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N2 - 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 Φ0. 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→nΦ0.

AB - 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 Φ0. 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→nΦ0.

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Magnetic field switching in parallel quantum dots

Abstract

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