Applied Physics Letters · 1978 · 111 citations · 4 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMaterials PhysicsSolid State PhysicsCrystal ChemistryCrystal LatticeElectron-phonon InteractionsOptical Properties Of SemiconductorsOptical Properties Of SolidsRaman SpectroscopyDisorder-induced PropertiesLattice VibrationsPhonon DynamicsPhonon-phonon InteractionsPhononsRaman Scattering
We report a Raman study of the lattice vibrations of the quaternary compound In1−xGaxAsyP1−y over the whole range of compositions lattice-matched to InP. The major bands in the spectra show a pseudo-two-mode behavior involving the optical phonons of InGaAs and InP. A low-frequency structure is attributed to disorder-induced scattering by acoustical vibrations. Weaker bands are assigned to Ga-P and In-As pair vibrations.
4