𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Finite-Barrier Height Effect on the Magnetoabsorption of a Shallow Donor in a Quantum Well Wire

✍ Scribed by I. Zorkani; A. Mdaa; R. Elkhenifer

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
155 KB
Volume
215
Category
Article
ISSN
0370-1972

No coin nor oath required. For personal study only.

✦ Synopsis

We report a calculation of the absorption coefficient of donor impurities located at the center of a quasi-1D GaAs quantum well wire with finite confinement potential as a function of photon energies for different wire widths. The theory has been formulated by using suitable variational wave functions. In the presence of a uniform magnetic field applied along the axis of the wire, there is an enhancement in the absorption peak as the size of the wire is increased and a reduction of this peak as the magnetic field is increased. We see clearly that the effect of confinement is more important compared to the effect of the magnetic field. A comparison with the infinite barrier potential is also investigated.

πŸ“œ SIMILAR VOLUMES

Binding Energy of the Ground and First F
Binding Energy of the Ground and First Few Excited States of a Shallow-Donor Impurity in Rectangular-Cross-Sectional Area GaAs Quantum-Well Wires under Applied Electric Field
✍ A. Montes; C.A. Duque; N. Porras-Montenegro πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 156 KB πŸ‘ 1 views

Using a variational approach within the effective mass approximation we calculate the binding energy of the ground and some excited donor impurity states in quantum-well wires with rectangular and cylindrical transversal sections under the action of applied electric fields. We study the binding ener