| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 14:34 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Solid State Physics and Materials Science
Title:
Energy density of optical phonons, electromagnetic field and free charges in a uniaxial semiconductor of wurtzite type.
Authors:
D.E.N. Brancus, L. Ion
Affiliation:
Universitatea din Bucuresti, Facultatea de Fizica, Catedra de Fizica Solidului
E-mail
dane@solid.fizica.unibuc.ro, lucian@solid.fizica.unibuc.ro
Keywords:
wurtzite-type materials, electron-phonon interaction, quantum wires
Abstract:
n the last years, the study of würtzite-type materials such as, ZnO, GaN, AlN and InN has known a large development due to their prospective application in electronics. In this context, the properties of the energy spectrum of the conduction electron and the effects of the electron-phonon interaction are of particularly interest[1]. However, unlike the case of optically isotropic semiconductors such as, GaAs, GaP, AlAs, InAs, for the würtzite-type materials, the anisotropy must be considered. By taking into account all the sources of the anisotropy into the problem, the energy density of a system of optical phonons, electromagnetic field and free charges is derived in a self consistent manner. The various contributing terms to the energy density, allowing the analysis of different topics such as: the polariton problem, the plasmon problem, the plasmon-optical phonon modes problem and, the free or bound polaron problem, are discussed.
[1] Full optical phonon spectrum and Frohlich Hamiltonian in wurtzite-type free standing quantum well wires, D.E.N. Brancus and L. Ion, Phys. Rev. B 76, 155304, 2007
|
|
|
|