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Exciton absorption in quantum-well wires under the electric field
(ELSEVIER SCIENCE BV, 2003)
The binding energy of excitons, and interband optical absorption in quantum-well wires of GaAs surrounded by Ga1-xAlxAs is calculated in effective-mass approximation, using a variational approach. Results obtained show ...
Binding energies of shallow donor impurities in different shaped quantum wells under an applied electric field
(ELSEVIER SCIENCE BV, 2003)
We present a variational method to compute the binding energies for a hydrogenic impurity located at the center of the finite parabolic (PQW), V-shaped (VQW or full graded well) and square (SQW) GaAs-Ga1-xAlxAs quantum ...
The effects of hydrostatic pressure and applied electric field on shallow donor impurities in GaAs/GaAlAs graded quantum well
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2005)
Using a variational approach, we have investigated the effects of the hydrostatic pressure, the well dimension, impurity position and electric field direction on the binding energy of shallow donor impurities in GaAs/GaAlAs ...
Electronic properties of two coupled Si delta-doped GaAs structures
(E D P SCIENCES, 2003)
We have theoretically investigated the subband structure of two coupled Si delta-doped GaAs at T = 0 K. For the uniform distribution we have studied the influence of the separation between the two doping layers. The ...
Intersubband optical absorption in a quantum well under a tilted magnetic field
(ACADEMIC PRESS LTD, 2001)
By using an appropriate coordinate transform we have calculated the intersubband optical absorption in the single square well under a tilted magnetic field. In this study the dependence of the intersubband transitions on ...
Intersubband transitions in quantum wells under intense laser field
(SPRINGER, 2005)
An intense laser field effect on the intersubband transitions in quantum wells is theoretically investigated within the framework of the effective-mass approximation. Results obtained show that intersubbband optical ...
Excitonic structure in a quantum well under the tilted magnetic field
(AMER INST PHYSICS, 2000)
By using an appropriate coordinate transform we have calculated variationally the ground state exciton binding energy in the single square well under the tilted magnetic field. The dependence of the binding energy to the ...
Geometrical effects on shallow donor impurities in quantum wires
(ELSEVIER SCIENCE BV, 2003)
We have studied theoretically the impurity binding energy for wires of different shapes (V-shaped quantum wire (V-QWR) and rectangular wire) with a variational procedure without using any coordinate transformation. The ...
Shallow donors in the triple-graded quantum well under the hydrostatic pressure and external fields
(ELSEVIER SCIENCE BV, 2006)
The binding energy of the donor in the triple-graded GaAs-(Ga,Al)As quantum well under the hydrostatic pressure, electric and magnetic fields are calculated by using a variational approach. The results have been obtained ...
Optical properties of excitons in quantum well wires under the magnetic field
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2003)
The binding energy of excitons in quantum well wires of GaAs surrounded by Ga1-xAlxAs was calculated in an effective mass approximation with the use of the variational approach. Results obtained show that the exciton binding ...