arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1209.5262cond-mat.mes-hall
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相互作用量子点系统中的电荷俘获

Charge trapping in the system of interacting quantum dots

Vladimir Mantsevich, Natalya Maslova, Petr Arseyev

摘要:

研究了$N$与连续谱态耦合的单能级量子点系统中存在库仑作用时的局域电荷动力学.不同的点的几何形状和初始电荷配置被认为是。分析是通过海森堡方程的局域电子对双光子。我们发现,电荷捕获发生在很宽的系统参数范围内,我们建议量子点的几何形状的实验观察这种现象。随着量子点数目的增加,库仑关联被显著抑制。我们发现了几个时间尺度的外观与强烈不同的弛豫速率的库仑相互作用值的范围很广。

英文摘要:

We analyzed the localized charge dynamics in the system of $N$ interacting single-level quantum dots (QDs) coupled to the continuous spectrum states in the presence of Coulomb interaction between electrons within the dots. Different dots geometry and initial charge configurations were considered. The analysis was performed by means of Heisenberg equations for localized electrons pair correlators. We revealed that charge trapping takes place for a wide range of system parameters and we suggested the QDs geometry for experimental observations of this phenomenon. We demonstrated significant suppression of Coulomb correlations with the increasing of QDs number. We found the appearance of several time scales with the strongly different relaxation rates for a wide range of the Coulomb interaction values.

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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