The Energy Levels Splitting Calculated for the Heavy and Light Holes in a Cd<sub>1-x</sub>Zn<sub>x</sub>S Double Quantum Dot

Zoubeida Khefacha; Nabil Safta; Mohamed Dachraoui

doi:doi:10.11648/j.nano.20170503.11

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The Energy Levels Splitting Calculated for the Heavy and Light Holes in a Cd_1-xZn_xS Double Quantum Dot

Zoubeida Khefacha, Nabil Safta, Mohamed Dachraoui

Published in American Journal of Nano Research and Applications (Volume 5, Issue 3)

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 Cd_1-xZn_xS 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, Cd_1-xZn_xS, Heavy and Light Holes, Tight Binding Approximation, Non Volatile Memories

References

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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
Y1  - 2017/06/14
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
SP  - 32
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

Zoubeida Khefacha

Departement of Chemistry, Faculty of Sciences, University of Monastir, Monastir, Tunisia
Nabil Safta

Unity of Quantum Physics, Faculty of Sciences, University of Monastir, Monastir, Tunisia
Mohamed Dachraoui

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

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Plain Text BibTeX RIS

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

Copy | Download

@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}
}

Copy | Download

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
Y1  - 2017/06/14
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
SP  - 32
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  -

Copy | Download