Exciton mixing in a wide GaAs/AlAs quantum well in weak and intermediate magnetic fields
- 15 July 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 42 (2) , 1478-1481
- https://doi.org/10.1103/physrevb.42.1478
Abstract
Excitation spectra of a high-quality wide GaAs/AlAs quantum well have been measured in a magnetic field up to 6 T. The spectra are distinguished by a complicated fine structure which depends strongly on magnetic field. By comparing the results with theoretical calculations which take into account exciton-mixing effects, most of the peaks observed in the spectra can be assigned. The high-resolution spectra of a selected anticrossing clearly indicate that a complicated many-exciton-mixing model is essential to explain the excitation spectra of wide quantum wells.Keywords
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