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Publication
Solid State Communications
Paper
Resonance enhanced umklapp Raman processes in GaAs-Ga1-xAlxAs superlattices
Abstract
We report the observation of umklapp Raman scattering of phonons with wavevector of 2nπ d in GaAs-Ga1-xAlxAs superlattices with period d, due to resonance enhancements at transitions from valence band to conduction band minibands. We also observed, for the first time, minizone formation in the spin-orbit split valence band. © 1978.