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ELECTRON TRANSPORT IN CENTERED DEFECT QUANTUM DOTS MOLECULE

机译：中心缺陷量子点分子的电子传输

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摘要

The electronic conductance of centered defect quantum dots (QDs) molecule is modeled using the two-dimensional transfer matrix method. The proposed model is based on the scattering formalism. We show that inserting defects in QDs, causes blue-shift in conductance as well as decreasing the distance between mini-bands (conductance gap). It is shown that increasing the defect size leads to a large blue-shift and also conductance gap decreases more. When defect is inserted in one QD, due to different energy contents of quantum dots (with and without defect), the coupling between these elements introduces a new separated transmission peak in the conductance. It should be mentioned that in the molecule with original QDs or two centered defect QDs, there isn't such a behavior. Also the concept of step quantum dots molecule is proposed for first time in this paper and its conductance properties is investigated. The proposed ideas in this paper, opens a new insight to design super molecule based on centered defect quantum dots for given electronic conductance.
机译：使用二维转移矩阵方法对中心缺陷量子点（QDs）分子的电子电导进行建模。所提出的模型基于散射形式主义。我们表明，在QD中插入缺陷会导致电导蓝移以及减小微带之间的距离（电导间隙）。结果表明，增大缺陷尺寸会导致较大的蓝移，并且电导间隙也会进一步减小。当将缺陷插入一个QD中时，由于量子点的能量含量不同（有缺陷和无缺陷），这些元素之间的耦合在电导中引入了一个新的分离的传输峰。应当指出，在具有原始QD或两个居中缺陷QD的分子中，没有这种行为。本文还首次提出了阶梯量子点分子的概念，并研究了其电导特性。本文中提出的思想为基于给定电子电导率的中心缺陷量子点设计超分子开辟了新的见解。

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  • 来源
  • 会议地点 Crete(GR);Crete(GR)
  • 作者

    A. Rostami; N. Sadoogi; H. Baghban Asghari Nejad; H. Rasooli Saghai;

  • 作者单位

    Photonics and Nanocrystals Research Lab. (PNRL), Faculty of Electrical and Computer Engineering, University of Tabriz,Tabriz 51664, Iran School of Engineering Emerging Technologies, University of Tabriz, Tabriz 51664, Iran;

    Photonics and Nanocrystals Research Lab. (PNRL), Faculty of Electrical and Computer Engineering, University of Tabriz,Tabriz 51664, Iran;

    Photonics and Nanocrystals Research Lab. (PNRL), Faculty of Electrical and Computer Engineering, University of Tabriz,Tabriz 51664, Iran;

    Department of Electrical Engineering, Islamic Azad University of Tabriz, Tabriz, Iran Department of Electrical Engineering, Islamic Azad University campus of Science and Research of Tehran, Tehran, Iran;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    centered defect; quantum dot; conductance; electronic transport;

    机译：中心缺陷量子点电导电子运输;

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