Shear-horizontal surface waves in a half-space of piezoelectric semiconductors

Abstract

We study the propagation of shear-horizontal waves near the surface of a piezoelectric semiconductor half-space of crystals of class 6 mm with the presence of a biasing electric field in the propagation direction. The three-dimensional equations of linear piezoelectric semiconductors are used. A transcendental equation that determines the dispersion relation is obtained and solved numerically. Results show that the semiconduction affects the wave speed and causes wave dispersion as well as attenuation, and that the waves can be amplified by the biasing electric field.

Keywords:

• shear-horizontal surface waves
• piezoelectric semiconductors
• dispersion relation
• propagation and amplification of the Bleustein–Gulyaev waves

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant number 11272247]; the National 111 Project of China [grant number B06024].