Abstract
Optically detected magnetic resonance (ODMR) is measured for photoexcited electrons in (In,Al)As/AlAs quantum dots having an indirect band gap and a type-I band alignment. A sharp ODMR resonance corresponding to a factor of is identified, associated with -valley electrons. Its variation with optical transition energy allows us to distinguish between the spectral regions of direct and indirect QDs, which is in good agreement with the results on exciton recombination dynamics.
- Received 3 May 2018
DOI:https://doi.org/10.1103/PhysRevB.97.245306
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