Bulgadaev, S. A.Levinson, I. B.Pertschi, Ottmar (Übersetzer)2007-06-222016-03-312007-06-222016-03-311975275283704http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-31428http://elib.uni-stuttgart.de/handle/11682/6120http://dx.doi.org/10.18419/opus-6103Renormalisation of the long-wave optical phonon spectrum due to the strongly nonequilibrium quasimonochromatic distribution of acoustic phonons with a frequency equal to half that of the optical phonon is studied. It is shown that in such systems of acoustic phonons long-lived long-wave excitations are presen whose frequency is close to that of the optical phonon. These elemmentary excitations are manifest in the light combinational scattering spectrum and lead to a complex structure of the Stokes scattering line.deinfo:eu-repo/semantics/openAccessPhononenstreuung530report2013-11-21