Tuning diamagnetic susceptibility of impurity doped quantum dots by noise-binding energy interplay

Arif, Sk. Md.; Bera, Aindrila; Ghosh, Manas

doi:10.1016/j.heliyon.2019.e01147

Cited by 7 publications

(5 citation statements)

References 55 publications

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“…electro-optical effect (EOE) [38], [39], [40], third-order nonlinear optical susceptibilities (TONOS) [41], [42], [43], [44], [45], [46], [47], [48], [49], [50], [51] and total optical dielectric function (TODF) [52]. Thus, the present study shows some new innovation with respect to our previous study [37]. Among the mentioned NLO properties EOE and TONOS stand for the second-order and third-order nonlinear phenomena, respectively.…”

Section: Introductionmentioning

confidence: 68%

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Influence of noise-binding energy interplay on the second and third-order nonlinear optical properties of impurity doped quantum dots

Ghosh¹,

Arif²,

Ghosh³

2019

Heliyon

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We inspect the role of binding energy (BE) on second-order and third-order nonlinear optical (NLO) properties of doped quantum dot (QD). In the study ample stress is given on understanding the role of noise on the manifestations of these NLO properties. The profiles of these NLO properties are analyzed mainly on the basis of variation of two important criteria viz. peak-shift and peak-height as a function of BE. Both these features depend on the presence of noise, its pathway (mode) of introduction and sometimes on the identity of the NLO properties. The findings of the study deem significance in realizing the binding energy-dependence of the said NLO properties of low-dimensional semiconductor materials when noise contribution becomes noticeable.

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Section: Introductionmentioning

confidence: 68%

“…Recently we have studied the influence of noise-binding energy interplay on a magnetic property viz. diamagnetic susceptibility (DMS) of doped QDs [37]. Current study endeavors to carry out an in-depth scrutiny of how the interplay between noise and binding energy (BE) can fine-tune three important NLO properties of 2-d GaAs QD viz.…”

Section: Introductionmentioning

confidence: 99%

Influence of noise-binding energy interplay on the second and third-order nonlinear optical properties of impurity doped quantum dots

Ghosh¹,

Arif²,

Ghosh³

2019

Heliyon

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“…2 ) [13,14]. In addition, the effects of exteriors perturbations such as magnetic, electric, and intense laser fields, pressure, and temperature on the electric and optical properties of the particles trapped on QD have been widely investigated in the literature [15][16][17][18][19][20][21][22][23][24][25]. Niculescu et al [26] have examined the impact of the dome-shaped QD's impurity state dependence on the magnetic field; they found that the ground state energy's diamagnetic shift increases monotonically with the applied field.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Role of Donor Impurity Position on the Electronic Properties in Strained Type I and Type II Core/Shell Quantum Dots under Magnetic Field

Pérez,

Aghoutane,

Laroze

et al. 2023

Materials

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In this theoretical investigation, we delve into the significant effects of donor impurity position within core/shell quantum dot structures: type I (CdTe/ZnS) and type II (CdTe/CdS). The donor impurity’s precise location within both the core and the shell regions is explored to unveil its profound influence on the electronic properties of these nanostructures. Our study investigates the diamagnetic susceptibility and binding energy of the donor impurity while considering the presence of an external magnetic field. Moreover, the lattice mismatch-induced strain between the core and shell materials is carefully examined as it profoundly influences the electronic structure of the quantum dot system. Through detailed calculations, we analyze the strain effects on the conduction and valence bands, as well as the electron and hole energy spectrum within the core/shell quantum dots. The results highlight the significance of donor impurity position as a key factor in shaping the behaviors of impurity binding energy and diamagnetic susceptibility. Furthermore, our findings shed light on the potential for tuning the electronic properties of core/shell quantum dots through precise impurity positioning and strain engineering.

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“…This is how we can manufacture new applications of QDs [12,13]. Knowing that the quantum nature of the electron is predominant in QDs, the results show that the presence [14][15][16][17][18] of impurity will considerably modify their properties due to the Coulombic interaction with the quasiparticles. On the other hand, due to geometrical constraints, the electron is close to the impurity ion, which leads to an increase in the binding energy.…”

Section: Introductionmentioning

confidence: 99%

Size Effect of Hemi-Toroidal Quantum Dot on the Electronic Properties in the Presence of an Off-Center Hydrogenic Shallow Donor Impurity

Boussetta

Belamkadem

Mommadi

et al. 2022

DDF

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We have studied the electronic properties in presence of an off-center hydrogenic shallow donor impurity confined in GaAs semiconductor quantum dot with toroidal geometry by considering the infinite confinement potential. This study has been performed within the parabolic band and the effective mass approximations in the presence of an off-center donor impurity. Three-dimensional Schrödinger equations are discretized using the finite difference method on a mesh containing Nr*Nθ*Nφ nodes. The numerical results of the analytical calculations demonstrate that the variation of the geometrical and torus radii (Rg and Rc) has a remarkable effect on the donor energy and the average electron-impurity distance, which is quite remarkable in small hemi-Toroidal quantum dot. On the other hand, we've demonstrated that the donor atom's position has a considerable impact on their energy. Furthermore, our numerical results show that the geometrical radius and donor atom's position significantly affect the electron impurity binding energy.

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Tuning diamagnetic susceptibility of impurity doped quantum dots by noise-binding energy interplay

Cited by 7 publications

References 55 publications

Influence of noise-binding energy interplay on the second and third-order nonlinear optical properties of impurity doped quantum dots

Influence of noise-binding energy interplay on the second and third-order nonlinear optical properties of impurity doped quantum dots

Unveiling the Role of Donor Impurity Position on the Electronic Properties in Strained Type I and Type II Core/Shell Quantum Dots under Magnetic Field

Size Effect of Hemi-Toroidal Quantum Dot on the Electronic Properties in the Presence of an Off-Center Hydrogenic Shallow Donor Impurity

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