We have studied LO phonon-plasmon coupled modes by means of Raman scattering in n-
InP for carrier densities between 6× 10 16 and 1× 10 19 cm− 3. A line-shape theory based
on the Lindhard-Mermin dielectric function that takes into account the nonparabolicity of the
InP conduction band as well as temperature and finite wave-vector effects is used to fit the
Raman spectra and extract accurate values of the electron density. The results obtained
from the Lindhard-Mermin model are compared with the charge density determinations …

We have studied LO phonon-plasmon coupled modes by means of Raman scattering in n-
InP for carrier densities between 61016 and 11019 cm 3. A line-shape theory based on the
Lindhard-Mermin dielectric function that takes into account the nonparabolicity of the InP
conduction band as well as temperature and finite wave-vector effects is used to fit the
Raman spectra and extract accurate values of the electron density. The results obtained
from the Lindhard-Mermin model are compared with the charge density determinations …