Nonlinear optical characteristics of thermodynamic effects- and electric field-triggered Mathieu quantum dot

Bahar, M. K.; Başer, P.

doi:10.1016/j.micrna.2022.207371

Cited by 20 publications

(4 citation statements)

References 48 publications

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“…In the literature, there are a lot of potential profiles to describe the interaction of an electron with the quantum dots. The used potential profiles have different shapes, including harmonic oscillator [23][24][25][26], anharmonic oscillator [27], Coulombic [28], parabolic and inverse square potential [29,30], Kratzer [31], and modified Kratzer [32,33], Morse [34,35], Pöschl-Teller [36][37][38][39][40], Rosen-Morse [41][42][43], Manning-Rosen [44], Gaussian [45], Woods-Saxon [46,47], Hulthen [48,49], the more general exponential cosine screened Coulomb (MGECSC) [50,51], Tietz [52], Hellmann [53], Mathieu [54,55], and inverse square root truncated and deformed exponential potentials [56].…”

Section: Introductionmentioning

confidence: 99%

Interaction of an electron and a uniformly charged spherical donor impurity

Mandal,

Karakoç,

Bayrak

2024

Phys. Scr.

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In this study, we propose an interaction potential between an electron and a uniformly charged spherical donor impurity in a quantum dot and numerically solve the Schrödinger equation using the finite difference method. We investigate the effects of the potential depth, donor radius, temperature, and hydrostatic pressure on the electronic and optical properties of an electron-donor impurity in a quantum dot, including absorption coefficients and the total change in the relative refractive index during the transition of an electron from the ground (1s) to excited (2p) states in the conduction band. Our findings indicate that an increase in donor radius or temperature leads to a red shift in the optical response, holding the parameters constant. Conversely, an increase in potential depth or hydrostatic pressure induces a blue shift in the optical response under the constant parameters.

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Section: Introductionmentioning

confidence: 99%

Interaction of an electron and a uniformly charged spherical donor impurity

Mandal,

Karakoç,

Bayrak

2024

Phys. Scr.

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“…Obviously, a hefty amount of research works is inclined to understanding various features of LDSN, including QDs. [ 1–30 ]…”

Section: Introductionmentioning

confidence: 99%

Harnessing the Shannon Entropy‐Based Magnetocaloric Effect in GaAs Quantum Dot under the Influence of Noise‐Anharmonicity Interplay

Bhakti,

Datta,

Ghosh

2024

Physica Status Solidi (b)

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In the present investigation, the Shannon entropy‐based magnetocaloric effect (MCE) of GaAs quantum dot (QD) is explored under the simultaneous influence of anharmonicity and Gaussian white noise (GWHN). The symmetry of the anharmonic potential (AHP), the manner of incorporation of GWHN, and the QD confinement interplay with great intricacy to tailor the MCE. AHP of odd (even) symmetry reduces (increases) the confinement of the system relative to the anharmonicity‐free system. Generally, the MCE profiles behave in diverse manner under additive white noise and multiplicative white noise and often show deviation from the noise‐free condition. It is also found that additive (multiplicative) noise lowers (raises) the magnitude of MCE in comparison with the noise‐free values.

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“…Bahar et al calculated OACs of a QD with a hydrogenic impurity in a Mathieu potential and found that the OAC and refractive index were affected by hydrostatic pressure and temperature variations [38]. Batra and coauthors examined structural parameters and the optical response of a QD with a tunable Kratzer confining potential [39]. Bassani et al treated the effects of donor and acceptor impurities on OACs in a spherical QD [40].…”

Section: Introductionmentioning

confidence: 99%

GaAs Quantum Dot Confined with a Woods–Saxon Potential: Role of Structural Parameters on Binding Energy and Optical Absorption

Dakhlaoui,

Belhadj,

Elabidi

et al. 2023

Inorganics

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We present the first detailed study of optical absorption coefficients (OACs) in a GaAs quantum dot confined with a Woods–Saxon potential containing a hydrogenic impurity at its center. We use a finite difference method to solve the Schrödinger equation within the framework of the effective mass approximation. First, we compute energy levels and probability densities for different parameters governing the confining potential. We then calculate dipole matrix elements and energy differences, E1p−E1s, and discuss their role with respect to the OACs. Our findings demonstrate the important role of these parameters in tuning the OAC to enable blue or red shifts and alter its amplitude. Our simulations provide a guided path to fabricating new optoelectronic devices by adjusting the confining potential shape.

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Nonlinear optical characteristics of thermodynamic effects- and electric field-triggered Mathieu quantum dot

Cited by 20 publications

References 48 publications

Interaction of an electron and a uniformly charged spherical donor impurity

Interaction of an electron and a uniformly charged spherical donor impurity

Harnessing the Shannon Entropy‐Based Magnetocaloric Effect in GaAs Quantum Dot under the Influence of Noise‐Anharmonicity Interplay

GaAs Quantum Dot Confined with a Woods–Saxon Potential: Role of Structural Parameters on Binding Energy and Optical Absorption

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