Generalization of the Hutson and White theory to the case of piezosemiconductors with mixed conductivity
The Hutson-White theory is extended to the case when there are mobile charge carriers of both signs in a piezeosemiconductor. Expressions are obtained for the damping and velocity of the longitudinal sound wave being propagated along the z axis in the piezosemiconductor as a function of the magnitude of the longitudinal electrical field, as well as for the constant current density originating here. It is shown that the acoustic wave changes the conductivity of a piezosemiconductor with mixed conductivity. A method is proposed for determining the mobility simultaneously of both the positive and negative carriers in an intrinsic piezosemiconductor.