3 September 1992 Franz-Keldysh oscillations and Wannier-Stark localization in GaAs/AlAs superlattices
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Proceedings Volume 1675, Quantum Well and Superlattice Physics IV; (1992) https://doi.org/10.1117/12.137625
Event: Semiconductors '92, 1992, Somerset, NJ, United States
Abstract
We have studied the electroabsorption properties of GaAs/AlAs superlattices with a 1 monolayer (ML) and 2 ML wide AlAs barriers. At large electric fields F parallel to the growth direction, Wannier-Stark localization of the carrier states is observed, even for the case of 1 ML AlAs barriers. In the low-field regime (up to 60 kV/cm), Franz-Keldysh oscillations are found. These oscillations are associated with the miniband dispersion of the superlattice. The oscillation period shows an F2/3 behavior, as theoretically expected. Numerical calculations on electroabsorption in strongly coupled superlattices are also presented.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Harald Schneider, Harald Schneider, A. Fischer, A. Fischer, Klaus H. Ploog, Klaus H. Ploog, } "Franz-Keldysh oscillations and Wannier-Stark localization in GaAs/AlAs superlattices", Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); doi: 10.1117/12.137625; https://doi.org/10.1117/12.137625
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