Delocalized exciton and electron conduction via theXvalley in GaAs/AlAs quantum wells
- 15 July 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 42 (2), 1474-1477
- https://doi.org/10.1103/physrevb.42.1474
Abstract
The results of magnetoreflection, photoluminescence, and photoluminescence excitation experiments are reported in GaAs-AlAs multiple quantum wells of different well widths, demonstrating the influence of the X band in the AlAs on the electron levels in GaAs. Evidence is presented for the existence of an exciton formed from a delocalized electron, and for the conduction of electrons from narrow wells to wide wells via the X band of AlAs.Keywords
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