Energy Levels and Laser Gains in a Quantum Well (GainAsP): the 'Effective Mass Approximation'

1995 ◽  
pp. 440-442
Keyword(s):  
Quantum Well ◽  
Effective Mass ◽  
Energy Levels ◽  
Effective Mass Approximation ◽  
Mass Approximation

Infrared transitions between hydrogenic states in GaInNAs/GaAs quantum wells

2016 ◽  
Vol 30 (22) ◽  
pp. 1650139
Author(s):  
E. B. Al ◽  
F. Ungan ◽  
U. Yesilgul ◽  
E. Kasapoglu ◽  
H. Sari ◽  
...  
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Effective Mass ◽  
Variational Approach ◽  
Nitrogen Concentration ◽  
Effective Mass Approximation ◽  
Donor Impurity ◽  
Transition Energies ◽  
Mass Approximation ◽  
Single Formula

The effects of nitrogen and indium concentrations on the [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]-like donor impurity energy states in a single [Formula: see text] quantum well (QW) are investigated by variational approach within the effective mass approximation. The results are presented as a function of the well width and the donor impurity position. It is found that the impurity binding and transition energies depend strongly on the indium concentration while depends weakly on the nitrogen concentration.

THE EFFECTS OF TEMPERATURE AND HYDROSTATIC PRESSURE ON THE DIAMAGNETIC SUSCEPTIBILITY OF A DONOR IN A QUANTUM WELL

2011 ◽  
Vol 18 (05) ◽  
pp. 147-152 ◽  
Author(s):  
U. YESILGUL ◽  
F. UNGAN ◽  
E. KASAPOGLU ◽  
H. SARI ◽  
I. SÖKMEN
Keyword(s):  
Hydrostatic Pressure ◽  
Binding Energy ◽  
Quantum Well ◽  
Effective Mass ◽  
Diamagnetic Susceptibility ◽  
Effective Mass Approximation ◽  
Mass Approximation ◽  
Hydrogenic Donor ◽  
Different Temperatures ◽  
Effects Of Temperature

Using the effective-mass approximation within a variational scheme, we have calculated the diamagnetic susceptibility and binding energy of a hydrogenic donor in a quantum well under different temperatures and hydrostatic pressure conditions. Our calculation have revealed the dependence of the diamagnetic susceptibility and the impurity binding on temperature and hydrostatic pressure.

Simultaneous effects of pressure and temperature on excitons in Pöschl–Teller quantum well

2017 ◽  
Vol 31 (08) ◽  
pp. 1750050 ◽  
Author(s):  
A. Anitha ◽  
M. Arulmozhi
Keyword(s):  
Binding Energy ◽  
Quantum Well ◽  
Effective Mass ◽  
Heavy Hole ◽  
Light Hole ◽  
Binding Energies ◽  
Exciton Binding Energy ◽  
Effective Mass Approximation ◽  
Mass Approximation ◽  
Asymmetric Configuration

Binding energies of the heavy hole and light hole exciton in a quantum well with Pöschl–Teller (PT) potential composed of GaAs have been studied variationally within effective mass approximation. The effects of pressure and temperature on exciton binding energy are analyzed individually and also simultaneously for symmetric and asymmetric configuration of the well. The results show that exciton binding energy (i) decreases as the well width increases, (ii) increases with pressure and (iii) decreases with temperature. Simultaneous effects of these perturbations lead to more binding of the exciton. The results are compared with the existing literature.

LASER INDUCED SEMICONDUCTOR–METAL TRANSITION IN A SEMIMAGNETIC QUANTUM WELL

2011 ◽  
Vol 10 (04n05) ◽  
pp. 611-615 ◽  
Author(s):  
P. NITHIANANTHI ◽  
K. JAYAKUMAR
Keyword(s):  
Magnetic Field ◽  
Variational Principle ◽  
Quantum Well ◽  
Effective Mass ◽  
Conduction Band ◽  
Effective Mass Approximation ◽  
Mass Approximation

The effect of laser and magnetic field on the semiconductor–metal transition in a Cd 1-x2 Mn x2 Te / Cd 1-x1 Mn x1 Te / Cd 1-x2 Mn x2 Te quantum well has been investigated using variational principle in effective mass approximation for smaller Mn composition. The effect of non parabolicity of the conduction band has been included in our calculation. The results are presented and discussed.

scholarly journals Finite Element Method Linear Triangular Element for Solving Nanoscale InAs⁄GaAs Quantum Ring Structures

2019 ◽  
Vol 30 (2) ◽  
pp. 19
Author(s):  
Eman Ali Hussain ◽  
Jamil A. Al-Hawasy ◽  
Lamyaa Hussein Ali
Keyword(s):  
Finite Elements ◽  
Effective Mass ◽  
Energy Levels ◽  
Electronic States ◽  
Finite Elements Method ◽  
Effective Mass Approximation ◽  
Triangular Element ◽  
Quantum Ring ◽  
Electronic Band ◽  
Mass Approximation

This paper concerned with the solution of the nanoscale structures consisting of the   with an effective mass envelope function theory, the electronic states of the  quantum ring are studied.  In calculations, the effects due to the different effective masses of electrons in and out the rings are included. The energy levels of the electron are calculated in the different shapes of rings, i.e., that the inner radius of rings sensitively change the electronic states. The energy levels of the electron are not sensitively dependent on the outer radius for large rings. The structures of  quantum rings are studied by the one electronic band Hamiltonian effective mass approximation, the energy- and position-dependent on electron effective mass approximation, and the spin-dependent on the Ben Daniel-Duke boundary conditions. In the description of the Hamiltonian matrix elements, the Finite elements method with different base linear triangular element is adopted. The non-linear energy confinement problem is solved approximately by using the Finite elements method with  linear triangular element, to calculate the energy of the electron states for the   quantum ring.

Sign in / Sign up

Export Citation Format

Share Document