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Phys Rev Lett. 2001 Jan 8;86(2):336-9.

Magneto infrared absorption in high electron density GaAs quantum wells.

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  • 1Grenoble High Magnetic Field Laboratory MPI-FKF/CNRS, 25 Avenue des Martyrs, F-38042 Grenoble Cedex 9, France.

Abstract

Magneto infrared absorption measurements have been performed in a highly doped GaAs quantum well which has been lifted off and bonded to a silicon substrate, in order to study the resonant polaron interaction. It is found that the pinning of the cyclotron energy occurs at an energy close to that of the transverse optical phonon of GaAs. This unexpected result is explained by a model taking into account the full dielectric constant of the quantum well.

PMID:
11177825
[PubMed]
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