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arXiv 1407.6489cond-mat.mes-hall
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外场诱导耦合量子点隧穿电流的开关

External field induced switching of tunneling current in the coupled quantum dots

V. N. Mantsevich, N. S. Maslova, P. I. Arseyev

摘要:

研究了在库仑关联存在下,两个外场量子点与电极弱耦合系统中的隧穿电流特性。研究发现,外磁场频率的调谐会引起快速的多重隧穿电流开关,并导致负隧穿电导。论证了多电子态的特殊作用。此外,我们还揭示了库仑关联下耦合量子点隧穿电流的非线性行为的条件。

英文摘要:

We investigated the tunneling current peculiarities in the system of two coupled by means of the external field quantum dots (QDs) weakly connected to the electrodes in the presence of Coulomb correlations. It was found that tuning of the external field frequency induces fast multiple tunneling current switching and leads to the negative tunneling conductivity. Special role of multi-electrons states was demonstrated. Moreover we revealed conditions for bistable behavior of the tunneling current in the coupled QDs with Coulomb correlations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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