Dependence of surface acoustic wave nonlinearity on propagation direction in crystalline silicon

Kumon, R. E.; Hamilton, M. F.; Hess, P.; Lomonosov, A.; Mikhalevich, V. G.
July 2000
AIP Conference Proceedings;2000, Vol. 524 Issue 1, p265
Academic Journal
Nonlinear distortion of a surface acoustic wave in a crystal depends not only on the second- and third-order elastic constants, but also on the plane and direction of propagation. A theory developed recently for nonlinear surface waves in arbitrary anisotropic solids reveals a strong dependence on propagation direction in the (001) plane of crystalline silicon. Specifically, the longitudinal velocity waveform develops compression shocks in some directions, rarefaction shocks in others. Measurements of laser-generated pulses support these predictions.


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