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首页> 外文期刊>Journal of Applied Physics >Ruderman-Kittel-Kasuya-Yosida interaction between diluted magnetic semiconductor quantum dots embedded in semiconductor
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Ruderman-Kittel-Kasuya-Yosida interaction between diluted magnetic semiconductor quantum dots embedded in semiconductor

机译:嵌入半导体中的稀磁半导体量子点之间的Ruderman-Kittel-Kasuya-Yosida相互作用

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摘要

Using the Keldysh Green's function method, we calculated the Ruderman-Kittel-Kasuya-Yosida (RKKY) magnetic interaction between the localized spins of two diluted magnetic semiconductor (DMS) quantum dots embedded in a two-dimensional semiconductor. It was shown that the RKKY interaction is strongly dependent on the hybridization between the quantum-confined states in DMS quantum dots and the band in the semiconductor, the discrete energy levels in DMS quantum dots and the carrier density of the semiconductor. Since the carrier energy levels in DMS quantum dots may be adjusted by the applied voltage gates, the RKKY interaction of the present system is gate-controllable. It provides an alternate way to get the controllable RKKY magnetic interaction in semiconductor nanostructures for potential application in quantum information processing.
机译:使用Keldysh Green函数方法,我们计算了嵌入二维半导体中的两个稀释磁半导体(DMS)量子点的局部自旋之间的Ruderman-Kittel-Kasuya-Yosida(RKKY)磁性相互作用。结果表明,RKKY相互作用强烈依赖于DMS量子点中的量子约束态与半导体中的能带之间的杂化,DMS量子点中的离散能级以及半导体的载流子密度。由于可以通过施加的电压门来调节DMS量子点中的载流子能级,因此本系统的RKKY相互作用是可控的。它提供了另一种方法来获得半导体纳米结构中可控的RKKY磁相互作用,从而有可能在量子信息处理中应用。

著录项

  • 来源
    《Journal of Applied Physics》 |2012年第6期|p.063905.1-063905.5|共5页
  • 作者

    Yao-Rui Wu; Dan Wang; Pin Lyu;

  • 作者单位

    Department of Physics and Department of Computer Science, Jilin University, Changchun 130012, China;

    Department of Physics, Jilin University, Changchun 130012, China;

    Department of Physics, Jilin University, Changchun 130012, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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