Effects of Applied Magnetic Field on the Optical Properties and Binding Energies Spherical GaAs Quantum Dot with Donor Impurity

Edet, C. O.; Al, E. B.; Ungan, F.; Ali, Noraziah; Rusli, Noradila; Aljunid, Syed Alwee; Endut, R.; Asjad, Muhammad Imran

doi:10.3390/nano12162741

Cited by 17 publications

(4 citation statements)

References 57 publications

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“…In the presence of the terms containing r −1 and r −2 , equation (15) can only be solved by numerical approach such as the diagonalization method [58]. Nevertheless, approximate analytical solution can be obtained by means of approximation schemes such as the Greene-Aldrich, and Pekeris approximation models [59,60].…”

Section: 2 Solution Of Pdmse For the Ptt Potentialmentioning

confidence: 99%

Energy spectrum and zero-temperature magnetic functions of a position-dependent mass system in a Pöschl-Teller-type potential constrained by a vector magnetic potential field

Eyube,

Notani,

Wadata

et al. 2023

Phys. Scr.

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In this work, the position-dependent mass Schrödinger equation is solved with the Pöschl-Teller-like potential in the presence of magnetic and Aharonov-Bohm (AB) flux fields. BenDaniel-Duke ambiguity parameter ordering is used to formulate the Hamiltonian operator for the system. An approximate analytical equation of the bound-state energy spectrum is obtained using the parametric Nikiforov-Uvarov solution technique along with a Pekeris-like approximation scheme. With the aid of the obtained equation for the energy levels, analytical formulas of magnetization and magnetic susceptibility at zero-temperature are derived and subsequently used to predict the physical properties of diatomic substances including the ground state H2, HCl, CO and LiH molecules. The expression for the bound-state-energy spectrum is used to generate numerical data for the molecules. The computed energy eigenvalues agree with the literature on diatomic molecules. The study revealed that in the absence of the external fields, the energy eigenvalues and magnetic susceptibility of the system are degenerate. However, with only a low intensity AB field, the degeneracy is completely eliminated from the energy states of the molecules.

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Section: 2 Solution Of Pdmse For the Ptt Potentialmentioning

confidence: 99%

Energy spectrum and zero-temperature magnetic functions of a position-dependent mass system in a Pöschl-Teller-type potential constrained by a vector magnetic potential field

Eyube,

Notani,

Wadata

et al. 2023

Phys. Scr.

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show abstract

“…We examined the system under under pressure (𝑃) and temperature (𝑇) effects. Under these effects, within the framework of the effective mass approach, the Hamiltonian in spherical coordinates for the confined electron takes the form [26]…”

Section: Schrödinger's Wave Equationmentioning

confidence: 99%

“…All parameters used in our calculations for InAs and GaAs are listed in Table 1. 1) is the spherically symmetrical SMKP and it is given as a function of hydrostatic pressure and temperature by [24,25,30],…”

Section: Schrödinger's Wave Equationmentioning

confidence: 99%

“…In this concern, M. Jaouane et al have simulated the optical properties for allowed transition 1s-1p for CdSe/ZnTe core/shell QD with screened modified Kratzer potential [24]. C. O. Edet et al pointed out in their papers how the magnetic field and quantum confinement parameters affect the optical properties of GaAs spherical QDs with screened modified Kratzer potential [25,26].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The nonlinear optical properties of self-assembled InAs/GaAs quantum dot under effect of temperature and hydrostatic pressure

Jaouane

El-Bakkari

et al. 2023

Preprint

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In this study, we have scrutinized the influences of the temperature \(\left(T\right)\) and hydrostatic pressure \(\left(P\right)\) on the nonlinear and linear optical properties of a core/shell quantum dot (QD) system with Screened Modified Kratzer potential (SMKP). To realize this goal, we have examined the energy levels and their associated wave functions using the diagonalization method within the effective mass approximation. Analytical terms for absorption coefficients (ACs) and relative refractive index changes (RRICs) are exploited by means of the density matrix approach. The numerical outcomes are offered for typical InAs/GaAs core/shell QD system. The dependency of SMKP, dipole transition matrix element and electron energies of the ground (\(1s\)) and first excited state (\(1p\)) on the \(P\) and \(T\) that are varied over a range. Obtained numerical calculation results revealed that the \(P\) and \(T\) impacts the magnitude and position of the resonant peaks that characterize the ACs and RRICs.

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Linear and Nonlinear Optical Properties of Symmetric and Asymmetric Double Triangular Quantum Dots Withinside the Presence of Magnetic Field

AL,

Ali,

Endut

et al. 2024

Advcd Theory and Sims

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Linear and third‐order nonlinear optical absorption coefficients and relative refractive index changes in symmetric and asymmetric double triangular quantum dots are examined theoretically. The dependence of these optical properties on the magnetic field is examined. After calculating energies and wave functions within the effective mass and parabolic band approaches, analytical expressions of linear and nonlinear optical properties are obtained using the compact density matrix approach and iterative method. Numerical calculations are presented for typical GaAs/AlGaAs material. The results show that the magnetic field causes different effects on the and transitions. Moreover, the calculated results also reveal that the resonance frequency and nonlinear contribution are different in symmetric and asymmetric structures. As a result, it is concluded that the magnetic field plays a vital and important role in the electronic and optical properties of the system and can be used to tune the inter‐subband transitions and change the corresponding optical sensitivities.

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Effects of Applied Magnetic Field on the Optical Properties and Binding Energies Spherical GaAs Quantum Dot with Donor Impurity

Cited by 17 publications

References 57 publications

Energy spectrum and zero-temperature magnetic functions of a position-dependent mass system in a Pöschl-Teller-type potential constrained by a vector magnetic potential field

Energy spectrum and zero-temperature magnetic functions of a position-dependent mass system in a Pöschl-Teller-type potential constrained by a vector magnetic potential field

The nonlinear optical properties of self-assembled InAs/GaAs quantum dot under effect of temperature and hydrostatic pressure

Linear and Nonlinear Optical Properties of Symmetric and Asymmetric Double Triangular Quantum Dots Withinside the Presence of Magnetic Field

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