Abstract
The luminescence spectra of GaAs/AlGaAs quantum wells (QWs) with low-density quasi-two-dimensional electron and hole channels were studied. It was demonstrated that, at temperatures below some critical value (T c ∼30 K) and for an excitation power lying in a certain temperature-dependent range, two metastable charge states with two-dimensional charge densities differing in both magnitude and sign can occur in the system under the same conditions. The obtained experimental data agree well with the mathematical model allowing for the transfer of photoexcited carriers to the barrier followed by their tunneling into QW.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 71, No. 8, 2000, pp. 465–471.
Original Russian Text Copyright © 2000 by Volkov, Kukushkin, Kulakovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Klitzing, Eberl.
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Volkov, O.V., Kukushkin, I.V., Kulakovskii, D.V. et al. Bistable charge states in a photoexcited quasi-two-dimensional electron-hole system. Jetp Lett. 71, 322–326 (2000). https://doi.org/10.1134/1.568342
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DOI: https://doi.org/10.1134/1.568342