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Direct and indirect exciton mixing in a slightly asymmetric double quantum well

Francisco Vera
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Abstract

We studied, theoretically, the optical absorption spectra for a slightly asymmetric double quantum well (DQW), in the presence of electric and magnetic fields. Recent experimental results for a 10.18/3.82/9.61 nm GaAs Al(_{.33} )Ga(_{.67})As DQW show clearly the different behavior in the luminescence peaks for the indirect exciton (IX) and left direct exciton (DX) as a function of the external electric field. We show that the presence of a peak near the (DX) peak, attributed to an impurity bound left (DX) in the experimental results, could be a consequence of the non-trivial mixing between excitonic states.

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Francisco Vera. 2000-07-21. Direct and indirect exciton mixing in a slightly asymmetric double quantum well. https://doi.org/10.1088/0953-8984%2F12%2F48%2F317

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