The effects of the magnetic field and dielectric screening on the diamagnetic susceptibility of a donor in a quantum well with anisotropic effective mass

Linear and nonlinear optical absorption coefficients of two-electron spherical quantum dot with parabolic potential

“…As the dot radius decreases, the electron density increases, and so the strength of absorption coefficients increases, because the absorption coefficients is directly proportional to the electron density, see Eqs. (9) and (10). On the other hand, the redshift of the absorptions is related to the expression ω − ℏ ( ) E fi .…”

“…Confined quantum systems have been one of the most important subjects of investigation. Therefore, due to their fundamental properties and their wide range of technological applications [1], a great deal of theoretical works on these structures has been reported extensively by using different methods like a finite element method [2,3], perturbation [4], density functional [5,6], configuration interaction [7,8], variational [9,10], exact solution [11], quantum genetic algorithm and Hartree-Fock Roothaan method [12] and other methods [13,14]. Understanding of the electronic and optical properties in such structures is important because these properties are strongly affected by the presence of impurity.…”

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

“…Therefore, in view of comprehensive investigation on DMS of LDSS; often, contribution of various physical quantities e.g. effective mass [47], [48], dielectric constant [49], [50], hydrostatic pressure and temperature [51], [52], [53], [54], [55] has been explored in detail.…”

Effects of Dielectric Screening Function and Image Charges on Hydrogenic Donor Binding Energy in a Surface Quantum Well

“…18,19 In addition, Kilicarslan et al have shown that for Si, there is an obvious increase in the binding energy for spatially dependent screening compared with that for constant screening in the range of considered well widths, whereas the spatially dependent screening effect is small for Ge and GaAs materials. 20 The effect of spatial dielectric screening on the diamagnetic susceptibility of a donor in low dimensional semiconducting systems like quantum well, quantum well wire and quantum dot in the infinite barrier model has been investigated by Nithiananthi et al 21 The effect of the dielectric screening on donor binding energies in a quantum wire has been estimated by Latha et al . with five different screening functions. 22 Keldysh has shown that in thin films, if the dielectric constant of the film is much larger than that of the substrate, as film thickness decreases, the Coulomb interaction increases strongly.…”