Vi. Khizhny et al., DIRECT EVIDENCE FOR A PIEZOELECTRICLIKE EFFECT IN COHERENTLY STRAINEDSIGE SI HETEROSTRUCTURES/, Applied physics letters, 69(7), 1996, pp. 960-962
A hybrid acoustic spectroscopy technique has been used to demonstrate
the (reversible) conversion of high frequency electric fields into lon
gitudinal acoustic waves within a modulation-doped pseudomorphic Si/Si
0.88Ge0.12/Si heterostructure. This provides compelling evidence for t
he existence of a piezoelectriclike coupling within such structures. (
C) 1996 American Institute of Physics.