Raman and infrared spectroscopical investigation of the optical vibrational modes in GaSb/AlSb superlattices

Authors
Milekhin, A Werninghaus, T Zahn, DRT Yanovskii, Y Preobrazhenskii, V Semyagin, B Gutakovskii, A
Citation
A. Milekhin et al., Raman and infrared spectroscopical investigation of the optical vibrational modes in GaSb/AlSb superlattices, EUR PHY J B, 6(3), 1998, pp. 295-299
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
6
Issue
3
Year of publication
1998
Pages
295 - 299
Database
ISI
SICI code
1434-6028(199812)6:3<295:RAISIO>2.0.ZU;2-4
Abstract
The vibrational spectrum of ultra-thin layer GaSb/AlSb superlattices was in vestigated in detail by infrared (IR) and Raman spectroscopies. The effect of confinement of the transverse and longitudinal optical phonons in both t ypes of the layers was studied. The dispersions of optical phonons of the G aSb and the AlSb obtained from the analysis of the Raman and IR spectra are in a good accordance with the theoretical data and results of neutron scat tering experiments. First- and second-order Raman spectroscopy indicates th e presence of intermixture of atoms at the interfaces in the GaSb/AlSb supe rlattices.