SUBPICOSECOND REAL-SPACE CHARGE-TRANSFER IN GAAS/ALAS TYPE-II SUPERLATTICES
We report time-resolved anti-Stokes Raman scattering measurements of short-period GaAs/AlAs type II superlattices which reveal directly that q approximately 0 confined and interface optical phonons are emitted by electrons when they transfer from the Γ valley in the GaAs layers to the X, valley in t...
Main Authors: | Depaula, A, Maciel, A, Weber, G, Ryan, J, Dawson, P, Foxon, C |
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Format: | Conference item |
Published: |
Publ by IOP Publishing Ltd
1992
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