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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 21:11 |
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Conference: Bucharest University Faculty of Physics 2005 Meeting
Section: Solid State Physics and Materials Science
Title:
Frohlich Hamiltonian and polaron problem in anisotropic uniaxial quasi-one-dimensional semiconductor structures
Authors:
D. E. N. Brancus
Affiliation:
Faculty of Physics, University of Bucharest
E-mail
dane@solid.fizica.unibuc.ro
Keywords:
Frohlich Hamiltonian, polaron, quantum wire, optical phonons, interface phonons, confinate phonons
Abstract:
In the framework of the anisotropic dielectric continuum model the polar vibrations of a quasi-one-dimensional (Q1D) semicon- ductor structure made of anisotropic uniaxial materials are obtained. The Frohlich Hamiltonian describing the interaction of conduction electrons with optical phonons of both types (the surface/interface phonons and the confinate phonons) is derived for the first time. In the context of weak electron- phonon interaction, the polaron problem in a typical quantum- well-wire structure is solved within the perturbation method.
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