Flexural mode dispersion in ultra-thin Ge membranes

Flexural mode dispersion in ultra-thin Ge membranes
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DOI：
10.1109/ulis.2013.6523515
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发表时间：
2013-03
期刊：
2013 14th International Conference on Ultimate Integration on Silicon (ULIS)
影响因子：
--
通讯作者：
E. Chavez;J. Gomis-Bresco;F. Alzina;J. Reparaz;V. Shah;M. Myronov;D. Leadley;C. S. Sotomayor Torres
E. Chavez;J. Gomis-Bresco;F. Alzina;J. Reparaz;V. Shah;M. Myronov;D. Leadley;C. S. Sotomayor Torres
中科院分区：
其他
文献类型：
--
作者：
E. Chavez;J. Gomis-Bresco;F. Alzina;J. Reparaz;V. Shah;M. Myronov;D. Leadley;C. S. Sotomayor Torres

文献摘要

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在60 nm厚的自支撑锗膜中研究了声子限制对声学色散关系的影响。利用布里渊光散射光谱对声子模进行了探测。检测到弯曲基波的二次行为。采用弹性连续介质模型确定了理论色散关系。
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.