• DocumentCode
    602837
  • Title

    Flexural mode dispersion in ultra-thin Ge membranes

  • Author

    Chavez, E. ; Gomis-Bresco, J. ; Alzina, F. ; Reparaz, J.S. ; Shah, V.A. ; Myronov, M. ; Leadley, D.R. ; Sotomayor Torres, C.M.

  • Author_Institution
    Catalan Inst. of Nanosci. & Nanotechnol, ICN2, Barcelona, Spain
  • fYear
    2013
  • fDate
    19-21 March 2013
  • Firstpage
    185
  • Lastpage
    188
  • Abstract
    The effect of the phonon confinement on the acoustic dispersion relation is studied in 60 nm thick free-standing germanium membranes. The detection of phonon modes is observed by Brillouin Light scattering spectroscopy. The quadratic behavior of fundamental flexural wave is detected. The theoretical dispersion relation is also determinate using elastic continuum model.
  • Keywords
    Brillouin spectra; elastic waves; elemental semiconductors; germanium; membranes; phonon dispersion relations; Brillouin light scattering spectroscopy; Ge; acoustic dispersion relation; elastic continuum model; flexural mode dispersion; flexural wave; germanium ultrathin membranes; phonon confinement; phonon modes; quadratic behavior; size 60 nm; Conductivity; Germanium; Thermal conductivity; Brillouin light scattering spectroscopy; Free-standing germanium membranes;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Ultimate Integration on Silicon (ULIS), 2013 14th International Conference on
  • Conference_Location
    Coventry
  • Print_ISBN
    978-1-4673-4800-3
  • Electronic_ISBN
    978-1-4673-4801-0
  • Type

    conf

  • DOI
    10.1109/ULIS.2013.6523515
  • Filename
    6523515