Influence of Plasmon-Phonon Coupling on the Electron-Impurity Interaction in the Free-Carrier Absorption |
| W. Szuszkiewicz Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland W. Bardyszewski Institute of Theoretical Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland and C. Julien Laboratoire de Physique des Solides de l'Université Pierre et Marie Curie (URA 154), 4, Pl. Jussieu, 75252 Paris Cedex 05, France |
| Full Text PDF |
| An experimental and theoretical evidence that the electron-impurity scattering is modified in the presence of the electromagnetic field oscillating with the frequency corresponding to the optical phonon energy is given. The coupled plasmon-phonon mode related feature in the reflectivity spectrum can be used to determine the upper edge of the LO phonon frequency band in highly doped materials. |
| DOI: 10.12693/APhysPolA.87.555 PACS numbers: 71.45.Gm, 78.30.Fs, 72.30.+q |