Published in
2013 14th International Conference on Ultimate Integration on Silicon (ULIS)
DOI: 10.1109/ulis.2013.6523515
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Flexural mode dispersion in ultra-thin Ge membranes
Proceedings article published in 2013 by
E. Chavez,
J. Gomis-Bresco,
F. Alzina,
J. S. Reparaz,
V. A. Shah,
Maksym Myronov,
D. R. Leadle,
D. R. (David R.) Leadley,
C. M. Sotomayor Torres 
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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.