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The anisotropy effects on the shallow-donor impurity states and optical transitions in quantum dots

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Abstract

In this work, we theoretically investigate the anisotropy effects on impurity states and optical transitions in quantum dots. In particular, we investigate the role of the impurity position on the binding energy and optical response of the ellipsoidal quantum dots. Theoretical calculations have been carried out using the effective mass approach. The results show that the impurity binding energies and the optical transitions between the impurity states are significantly affected by the impurity position and aspect ratio of the ellipsoidal quantum dots. In general, we conclude that the anisotropy degree of quantum dots can be used as a tunability parameter for the electronic structure and optical response of the systems based on the quantum dots.

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Acknowledgements

This research is prepared from Fatma Aydin’s PhD thesis in Sivas Cumhuriyet University, Institute of Science, Physics Department.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Cumhuriyet University, 58140, Sivas, Turkey

    F. Aydin & E. Kasapoglu

  2. Department of Mathematics and Natural Science Education, Faculty of Education, Cumhuriyet University, 58140, Sivas, Turkey

    H. Sari

  3. Physics Department, Faculty of Science, Dokuz Eylul University, 35390, Izmir, Turkey

    S. Sakiroglu & I. Sökmen

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  1. F. Aydin
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  2. H. Sari
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  3. E. Kasapoglu
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  4. S. Sakiroglu
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  5. I. Sökmen
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Correspondence to H. Sari.

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Aydin, F., Sari, H., Kasapoglu, E. et al. The anisotropy effects on the shallow-donor impurity states and optical transitions in quantum dots. Eur. Phys. J. Plus 136, 832 (2021). https://doi.org/10.1140/epjp/s13360-021-01833-x

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  • DOI: https://doi.org/10.1140/epjp/s13360-021-01833-x

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