Strong and weak modes in polytypes of SiC

  • L. A. Fal’kovskii
  • J. Camassel
Condensed Matter


The concept of an extended Brillouin zone is used to analyze the intensity of phonon modes observed in optical and Raman investigations of different polytypes of silicon carbide. It is shown that the relative intensity of these modes agrees with the magnitude of the splitting of the doublets, which are degenerate in the extended zone.

PACS numbers

78.30.Hv 63.20.Dj 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    R. W. G. Wyckoff, Crystal Structures, Vol. 1, 2nd ed., Interscience, New York, 1963, pp. 108, 113.Google Scholar
  2. 2.
    Lyle Patrick, Phys. Rev. 167, 809 (1968); D. F. Feldman, James H. Parker Jr., W. J. Choyke, and Lyle Patrick, Phys. Rev. 170, 698 (1968); Phys. Rev. 173, 787 (1968).CrossRefADSGoogle Scholar
  3. 3.
    S. Nakashima, H. Katahama, Y. Nakakura, and A. Mitsuishi, Phys. Rev. B 33, 5721 (1986).CrossRefADSGoogle Scholar
  4. 4.
    J. M. Bluet, K. Chourou, M. Anikin, and R. Madar, SiC and Related Materials, Intern. Conf. Montpellier, 1998.Google Scholar

Copyright information

© MAIK "Nauka/Interperiodica" 1999

Authors and Affiliations

  • L. A. Fal’kovskii
    • 1
    • 2
  • J. Camassel
    • 2
  1. 1.L. D. Landau Institute of Theoretical PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Groupe d’Etudes des SemiconducteursFrance

Personalised recommendations