Browsing by Author "Ergün Y."
Now showing items 1-6 of 6
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Binding energies of excitons in symmetric and asymmetric coupled double-quantum well structures in a magnetic field
The binding energy of excitons in the symmetric and asymmetric coupled double GaAs/Ga 1-cursive Greek chiAl cursive Greek chiAs quantum wells is calculated by using variational approach. Results have been obtained as a ... -
Exciton quantization in parabolic quantum wells
The exciton wavefunction in parabolic quantum wells is calculated using variational techniques and effective mass theory. The influences of the potential shape and of confinement on the exciton binding energies are studied. ... -
Exciton states in a quantum dot with parabolic confinement
Do?an Ü.; Sakiro?lu S.; Yildiz A.; Akgüngör K.; Epik H.; Sökmen I.; Sari H.; Ergün Y. (2011)In this study the electronic eigenstructure of an exciton in a parabolic quantum dot (QD) has been calculated with a high accuracy by using Finite element method (FEM). We have converted the coordinates of electronlight-hole ... -
Excitons in a quantum well under an electric field
The effect of an applied electric field on exciton binding energies are calculated by using variational techniques with the effective mass theory. Exact Airy functions are used for the electron and hole. Our results show ... -
Improvement in electroabsorption and the effect of the electric field in the tuneable wavelength converter
Sari H.; Kasapo?lu E.; Ergün Y.; Sökmen I. (1999)The numerical results of the study of a novel wavelength converter which can be tuned with the application of an external field are presented. For this device, exciton binding energies, radiuses and the absorption coefficient ... -
The orbit center dependence of the energy levels in a multiple quantum wells under external tilted magnetic and electric fields
An analytical solution to the Schrödinger equation for a multiple quantum well system subjected to an externally applied electric field the growth direction and an externally applied tilted magnetic field are obtained and ...