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Electronic and optical properties of a \(D_2^+\) complex in two-dimensional quantum dots with Gaussian confinement potential

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Abstract

Using the two-dimensional diagonalization method and the effective mass approximation, the electronic structure and intersubband optical absorption of the singly ionized double donor complex confined in a Gaussian quantum dot have been investigated. The obtained results indicated that the quantum dot size and internuclear distance significantly affect the binding energy, dissociation energy, equilibrium distance, and amplitude of the optical absorption. Also, we conclude that a significant increase in the amplitude of the dipole-related matrix element and the energy difference between the two lowest-lying energy states is observed when the distance between the donor atoms is in the order of the quantum dot size. Consequently, the electronic and optical properties can be precisely tuned by controlling the system’s size and the internuclear distance.

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Acknowledgements

CAD is grateful to the Colombian Agencies: CODI-Universidad de Antioquia (Estrategia de Sostenibilidad de la Universidad de Antioquia and projects "Propiedades magneto-ópticas y óptica no lineal en superredes de Grafeno", "Estudio de propiedades ópticas en sistemas semiconductores de dimensiones nanoscópicas", and "Propiedades de transporte, espintrónicas y térmicas en el sistema molecular ZincPorfirina"), and Facultad de Ciencias Exactas y Naturales-Universidad de Antioquia (CAD exclusive dedication project 2021-2022). CAD also acknowledges the financial support from El Patrimonio Autónomo Fondo Nacional de Financiamiento para la Ciencia, la Tecnología y la Innovación Francisco José de Caldas (project: CD 111580863338, CT FP80740-173-2019).

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Authors and Affiliations

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

    H. Sari

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

    E. B. Al & E. Kasapoglu

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

    S. Sakiroglu & I. Sökmen

  4. Dokuz Eylul University, Izmir, Turkey

    I. Sökmen

  5. Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia

    M. Toro-Escobar & C. A. Duque

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  1. H. Sari
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  2. E. B. Al
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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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  7. C. A. Duque
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Contributions

The contributions of the authors are as follows: HS: proposed the problem and worked on the numerical calculations and writing of the manuscript. EBA: worked on the numerical calculations and writing of the manuscript. EK: worked on the numerical calculations, in formal analysis, and writing of the manuscript. SS: worked on the formal analysis and writing of the manuscript. IS: worked on the numerical calculations and formal analysis. MT-E: worked on the numerical calculations and writing of the manuscript. CAD: worked on the numerical calculations and writing of the manuscript.

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Correspondence to C. A. Duque.

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The authors do not have any financial and non-financial competing interests statement.

Data Availability Statement

This manuscript has associated data in a data repository. [Authors’ comment: All the files with tables, figures, and codes are available. The corresponding author will provide all the files in case they are requested.]

Additional information

I. Sökmen, Dokuz Eylul University, Retired.

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Sari, H., Al, E.B., Kasapoglu, E. et al. Electronic and optical properties of a \(D_2^+\) complex in two-dimensional quantum dots with Gaussian confinement potential. Eur. Phys. J. Plus 137, 464 (2022). https://doi.org/10.1140/epjp/s13360-022-02649-z

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