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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2004     Display Documents



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ID: 192879.0, MPI für Festkörperforschung / FKF Publikationen 2004
Electron-phonon interaction in a doped GaAs quantum well
Authors:Faugeras, C.; Martinez, G.; Riedel, A.; Hey, R.; Friedland, K. J.
Language:English
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Physica E
Volume:22
Issue / Number:1-3
Start Page:586
End Page:589
Review Status:not specified
Audience:Not Specified
Abstract / Description:We investigate the cyclotron resonance (CR) on a single GaAs quantum
well containing a two-dimensional electron gas (7.0 X 10(11) cm(-2)),
in magnetic fields up to 28 T in order to study the resonant polaron
coupling. When the normal to the surface of the sample is in the same
direction as that of light propagation, we do not observe an anomaly of
the CR absorption in the optical phonon range of energy. When the
normal of the sample is tilted with respect to the light propagation
direction (and with the magnetic field direction) we observe a pinning
of the CR peak at an energy lower than that of the longitudinal optical
(LO) phonon energy. This mode is identified as the coupled intersubband
plasmon-LO phonon of the quantum well. (C) 2003 Elsevier B.V. All
rights reserved.
Free Keywords:cyclotron resonance; 2DEG; polaron coupling; GaAs
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:MPI, FKF, CNRS, Grenoble High Magnet Field Lab, F-38042 Grenoble 9, France.
; Paul Drude Inst, D-10117 Berlin, Germany.
Identifiers:ISI:000221140800142 [ID No:1]
ISSN:1386-9477 [ID No:2]
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