Abstract
A Raman investigation of the phonon structure of GaAs-AlAs superlattices is presented. The results can be understood in terms of the lattice dynamics of thin ionic slabs. Two kinds of modes are present: 'bulk' slab vibrations of LO- and TO-character, confined in the respective slabs, and interface vibrational modes which produce a macroscopic electric field in the two constituent layers. The coupling of the superlattice phonons with the electronic system is analyzed by studying the resonance behavior of the Raman spectrum.
| Original language | English (US) |
|---|---|
| Title of host publication | Unknown Host Publication Title |
| Editors | K. Ploog, N.T. Linh |
| Publisher | Editions de Physique |
| Pages | 141-145 |
| Number of pages | 5 |
| ISBN (Print) | 2868830153 |
| State | Published - Dec 1 1986 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Engineering