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Analytical study of the Stark shift effect on the tuned quantum dot\(\slash\)ring systems

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Abstract

In the present work, a tuned quantum dot\(\slash\)ring system under both external magnetic and electric fields is studied. The energy eigenvalues and wave functions are analytically derived. Then, an analytical expression for the Stark shift is obtained. The results reveal that: (i) The ground state and excited state energies at large and small electric fields show various behaviours, (ii) the ground and excited state energies reduce by raising the electric field and (iii) the ground and excited state energies increase by enhancing the system size. Our model can be transformed into a two-dimensional (2D) quantum disk or a 2D quantum ring. The results show that the Stark shifts at low and high electric fields vary. The behaviour depends strongly on the magnetic field and the system size.

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Authors and Affiliations

  1. Department of Physics, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran

    P Hashemi & M Servatkhah

  2. Department of Physics, Nanotechnology Research Center, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran

    M Servatkhah

  3. Department of Physics, Estahban Higher Education Center, Estahban, 74519-44655, Iran

    R Pourmand

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  1. P Hashemi
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  2. M Servatkhah
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  3. R Pourmand
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Correspondence to M Servatkhah.

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Hashemi, P., Servatkhah, M. & Pourmand, R. Analytical study of the Stark shift effect on the tuned quantum dot\(\slash\)ring systems. Pramana - J Phys 97, 124 (2023). https://doi.org/10.1007/s12043-023-02596-z

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  • DOI: https://doi.org/10.1007/s12043-023-02596-z

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