Confined optical phonon effects on the band gap renormalization in quantum wire structures

Date
1999
Advisor
Instructor
Source Title
Physica B : Condensed Matter
Print ISSN
0921-4526
Electronic ISSN
Publisher
Elsevier Science
Volume
263-264
Issue
Pages
546 - 548
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

We consider the different approximations for the bandgap renormalization (BGR) within the random phase approximation (RPA), the quasi-static limit and the plasmon-pole approximation, and compare with the full result. We then include bulk optical phonons and also the phonon confinement using the phonons from the dielectric continuum (DC) model. We show that the results are very similar except at low densities where the quasi-static results overestimate the renormalization.

Course
Other identifiers
Book Title
Keywords
Approximation theory, Energy gap, Mathematical models, Phonons, Bandgap renormalization, Phonon confinement, Semiconductor quantum wires
Citation
Published Version (Please cite this version)