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Saddle point excitons inGaAs GaAlAssuperlattices: Magneto-optical effects

Authors
Journal
Superlattices and Microstructures
0749-6036
Publisher
Elsevier
Publication Date
Volume
6
Issue
2
Identifiers
DOI: 10.1016/0749-6036(89)90119-5

Abstract

Abstract We have studied the luminescence excitation properties of a series of GaAs GaAlAs superlattices in a magnetic field. The periods of the samples are such that the miniband widths for electrons range between 0 and 20 meV. New structures are observed at zero magnetic field, which we attribute to excitons based on their magnetic field dependence. Comparing experimental spectra and theoretical calculations, we discuss the possibility that these structures are saddle point excitons.

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