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Direct evidence for a piezoelectriclike effect in coherently strained SiGe/Si heterostructures

By V. I. Khizhny, O. A. Mironov, Evan H. C. Parker, P. J. (Peter J.) Phillips, Terry E. Whall and Michael J. Kearney


A hybrid acoustic spectroscopy technique has been used to demonstrate the (reversible) conversion of high frequency electric fields into longitudinal acoustic waves within a modulation-doped pseudomorphic Si/Si0.88Ge0.12/Si heterostructure. This provides compelling evidence for the existence of a piezoelectriclike coupling within such structures

Topics: TK, QC
Publisher: American Institute of Physics
Year: 1996
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