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We present the first identification of the direct participation of the GaAs interface (IF) mode in the phonon-assisted recombinations from type-II GaAs/AlAs short-period superlattices (SPSL). This is achieved by utilizing a novel first-order resonant Raman process associated with the type-II X z -Γ band gap to enable a direct comparison, in the same sample, of zone boundary phonons with the...
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