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The Energy Levels Splitting Calculated for the Heavy and Light Holes in a Cd1-xZnxS Double Quantum Dot

Received: 23 March 2017     Accepted: 19 April 2017     Published: 14 June 2017
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Abstract

This work reports on a theoretical investigation of a double Cd1-xZnxS quantum dot embedded in an insulating material.The quantum dots are assumed to have a flattened cylindrical geometry with a finite barrier at the boundary.The energy levels splitting has been computed, using the tight binding approximation, in the case of the heavy and light holes, as a function of zinc composition for different inter-quantum dot separations. An analysis of the results shows that, for the light holes, the coupling is maximum when x=0.8. Moreover, it has been demonstrated the strong localization character of the heavy holes in this nanostructure.

Published in American Journal of Nano Research and Applications (Volume 5, Issue 3)
DOI 10.11648/j.nano.20170503.11
Page(s) 32-36
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Double Quantum Dot, Cd1-xZnxS, Heavy and Light Holes, Tight Binding Approximation, Non Volatile Memories

References
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Cite This Article
  • APA Style

    Zoubeida Khefacha, Nabil Safta, Mohamed Dachraoui. (2017). The Energy Levels Splitting Calculated for the Heavy and Light Holes in a Cd1-xZnxS Double Quantum Dot. American Journal of Nano Research and Applications, 5(3), 32-36. https://doi.org/10.11648/j.nano.20170503.11

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    ACS Style

    Zoubeida Khefacha; Nabil Safta; Mohamed Dachraoui. The Energy Levels Splitting Calculated for the Heavy and Light Holes in a Cd1-xZnxS Double Quantum Dot. Am. J. Nano Res. Appl. 2017, 5(3), 32-36. doi: 10.11648/j.nano.20170503.11

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    AMA Style

    Zoubeida Khefacha, Nabil Safta, Mohamed Dachraoui. The Energy Levels Splitting Calculated for the Heavy and Light Holes in a Cd1-xZnxS Double Quantum Dot. Am J Nano Res Appl. 2017;5(3):32-36. doi: 10.11648/j.nano.20170503.11

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  • @article{10.11648/j.nano.20170503.11,
      author = {Zoubeida Khefacha and Nabil Safta and Mohamed Dachraoui},
      title = {The Energy Levels Splitting Calculated for the Heavy and Light Holes in a Cd1-xZnxS Double Quantum Dot},
      journal = {American Journal of Nano Research and Applications},
      volume = {5},
      number = {3},
      pages = {32-36},
      doi = {10.11648/j.nano.20170503.11},
      url = {https://doi.org/10.11648/j.nano.20170503.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.nano.20170503.11},
      abstract = {This work reports on a theoretical investigation of a double Cd1-xZnxS quantum dot embedded in an insulating material.The quantum dots are assumed to have a flattened cylindrical geometry with a finite barrier at the boundary.The energy levels splitting has been computed, using the tight binding approximation, in the case of the heavy and light holes, as a function of zinc composition for different inter-quantum dot separations. An analysis of the results shows that, for the light holes, the coupling is maximum when x=0.8. Moreover, it has been demonstrated the strong localization character of the heavy holes in this nanostructure.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - The Energy Levels Splitting Calculated for the Heavy and Light Holes in a Cd1-xZnxS Double Quantum Dot
    AU  - Zoubeida Khefacha
    AU  - Nabil Safta
    AU  - Mohamed Dachraoui
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    PY  - 2017
    N1  - https://doi.org/10.11648/j.nano.20170503.11
    DO  - 10.11648/j.nano.20170503.11
    T2  - American Journal of Nano Research and Applications
    JF  - American Journal of Nano Research and Applications
    JO  - American Journal of Nano Research and Applications
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    EP  - 36
    PB  - Science Publishing Group
    SN  - 2575-3738
    UR  - https://doi.org/10.11648/j.nano.20170503.11
    AB  - This work reports on a theoretical investigation of a double Cd1-xZnxS quantum dot embedded in an insulating material.The quantum dots are assumed to have a flattened cylindrical geometry with a finite barrier at the boundary.The energy levels splitting has been computed, using the tight binding approximation, in the case of the heavy and light holes, as a function of zinc composition for different inter-quantum dot separations. An analysis of the results shows that, for the light holes, the coupling is maximum when x=0.8. Moreover, it has been demonstrated the strong localization character of the heavy holes in this nanostructure.
    VL  - 5
    IS  - 3
    ER  - 

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Author Information
  • Departement of Chemistry, Faculty of Sciences, University of Monastir, Monastir, Tunisia

  • Unity of Quantum Physics, Faculty of Sciences, University of Monastir, Monastir, Tunisia

  • Laboratory of Analytical Chemistry and Electrochemistry, Faculty of Sciences, University of Tunis El Manar, Tunis, Tunisia

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