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Photo-thermal transitions of magneto-excitons in quantum wells

J. Cerne·J. Kono·M. Su·M. S. Sherwin
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Abstract

By monitoring changes in excitonic photoluminescence (PL) that are induced by terahertz (THz) radiation, we observe resonant THz absorption by magnetoexcitons in GaAs/AlGaAs quantum wells. Changes in the PL spectrum are explored as a function of temperature and magnetic field, providing insight into the mechanisms which allow THz absorption to modulate PL. The strongest PL-quenching occurs at the heavy hole $1s\to 2p^+$ resonance where heavy hole excitons are photo-thermally converted into light hole excitons.

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J. Cerne, J. Kono, M. Su, M. S. Sherwin. 2002-07-12. Photo-thermal transitions of magneto-excitons in quantum wells. https://doi.org/10.1103/physrevb.66.205301

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