Observation of light scattering by bound states of optical phonons trapped at neutral donor centers with a degenerate ground state
Bairamov B. Kh., Irmer G., Monecke I., Toporov V. V.
The first experimental observation of bound states of optical phonons trapped by neutral donor centers in crystals with a degenerate ground state is reported. These bound states were predicted previously on the basis of a general theory of weakly bound electron-phonon states for Jahn-Teller centers.