Raman probe of classical magnetoresistance in doped GaAs/AlAs superlattices

Authors
Pusep, YA Liang, JJ Geurts, J Moshegov, NN
Citation
Ya. Pusep et al., Raman probe of classical magnetoresistance in doped GaAs/AlAs superlattices, PHYSICA B, 298(1-4), 2001, pp. 324-328
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
298
Issue
1-4
Year of publication
2001
Pages
324 - 328
Database
ISI
SICI code
0921-4526(200104)298:1-4<324:RPOCMI>2.0.ZU;2-7
Abstract
The characteristical asymmetric shapes of the Raman tines caused by the col lective plasmon-LO phonon excitations in heavily doped GaAs/AlAs superlatti ces were analyzed in order to separate the influence of the magnetic field on the spatial extent of the collective excitations and on their damping co nstant, which is attributed to the AC conductivity. It was shown that the m agnetic field influences the damping of the plasmon-like excitations strong er than their spatial extent. (C) 2001 Elsevier Science B.V. All rights res erved.