The screening of polar optical modes in a semiconductor quantum well
| Autor: | H Rodríguez-Coppola, F García-Moliner, H. Suárez-Ferrer |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Physics
Coupling Work (thermodynamics) Condensed matter physics business.industry Condensed Matter Physics Electronic Optical and Magnetic Materials Vibration Semiconductor Quantum mechanics Materials Chemistry Polar Electrical and Electronic Engineering Random phase approximation Fermi gas business Quantum well |
| Zdroj: | Semiconductor Science and Technology. 19:586-592 |
| ISSN: | 1361-6641 0268-1242 |
| DOI: | 10.1088/0268-1242/19/5/006 |
| Popis: | The screening of the electrostatic potential of the first two long wave polar optical modes in a semiconductor quantum well is studied for various situations. The potential of the bare modes was obtained in a model accounting for the full coupling between electrical and mechanical vibrations. The dielectric response function of the screening electron gas is described in a quasi 2D multisubband version of the random phase approximation and Hubbard (that explicitly includes exchange) approximations, using in the calculation in all cases the occupied and some of the empty subbands. The purpose of this work is to determine the relative importance of the design parameters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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