ISSN:
1090-6487
Keywords:
73.20.Dx
;
33.50.Dq
;
78.66.−w
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.568342
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