Resonant Raman scattering and exciton-optical phonon coupling in CdTe/(Cd,Mn)Te quantum wells
- 31 August 1987
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 51 (9) , 667-669
- https://doi.org/10.1063/1.98328
Abstract
Resonant Raman scattering at the E0 gap from longitudinal optical phonons in CdTe/(Cd,Mn)Te multiple quantum wells has been studied near the strain split n=1 exciton ground state. A large resonance enhancement is observed with distinct incoming and outgoing channels, in agreement with luminescence excitation spectra. Phonons are observed from CdTe wells and (Cd,Mn)Te barriers, indicative of small valence-band offsets for this superlattice system. At extreme resonance, striking linewidth broadening and damping effects for the alloy phonon modes are witnessed.Keywords
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