Analytical variational expressions for calculation of binding energies of the donor states in quantum wells
β Scribed by Ben-yuan Gu; Chong-ru Huo
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 390 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0038-1098
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π SIMILAR VOLUMES
Using a variational procedure within the effective-mass approximation we have calculated the binding energies of shallow-donor impurities in cylindrical GaAs quantum-well wires, in an axial magnetic field and an infinite confinement potential. In contrast to the previous results in quantum wells, we
Within the effective-mass approximation a simple method to calculate the spectra of a shallowdonor impurity in GaAsΒ±(Ga, Al)As cylindrical quantum-well wires (QWWs) suitable for any confinement potential shape in radial direction is proposed. A trial function is taken as the product of a hydrogenic
The conduction and valence subband energies in the presence of an electric field are calculated using the fifth-order Runge-Kutta method. The binding energies of shallow donors, acceptors and excitons in finite-barrier GaAs/Ga 1-x Al x As quantum wells are then obtained variationally in the presence