Inelastic scattering of hot electrons in n-GaAs/AlAs types I and II multiple quantum wells doped with silicon |
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Authors: | I A Akimov V F Sapega D N Mirlin V M Ustinov |
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Institution: | A.F. Ioffe Physico-Technical Institute, Russian Academy of Sciences, St. Petersburg 194021, Russia |
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Abstract: | We have studied the dependence of hot electron scattering rate on temperature in n-GaAs/AlAs types I and II multiple quantum wells. For a sample with well width 37 Å, which is on the borderline between types I and II band alignment, the increase of the temperature in the range 6–80 K leads to the strong decrease of the hot electron scattering rate. We explain this result by ionization of donors and transfer of cold electrons from the Γ-valley of GaAs to the X-valley of AlAs. |
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Keywords: | Hot electron scattering Hot photoluminescence Quantum wells |
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