Acoustomagnetoelectric current effects on mesoultrasound in anisotropic semiconductors

Abstract

The acoustomagnetoelectric (AME) “current” effects on mesoultrasound in monopolar “single-valley” semiconductors with anisotropic scattering in arbitrary classical magnetic fields are computed analytically. The specimen is considered short-circuited along the q-wave vector of the ultrasound (US) wave. Two configurations are examined: 1) q is directed at an arbitrary angle 9 to the axis of highest order crystal symmetry C₆ (z axis), the y axis ⊥ to the (q, C₆) plane, the magnetic field B lies in the (q, y) plane at an arbitrary angle ϕ to the vector q. Two transverse AME field components are calculated: along y and in the (q, C₆) plane. They express the “Hall effects at mesoultrasound,” the “planar” and “normal,” 2) q is directed along the y axis while B is in the (x, z) plane at an angle α to the C₆(z) axis. The AME field component along B, the “Grobner effect at mesoultrasound,” is calculated. The dependence of the effects onB is studied and their estimate is given in weak and strong fields.