On the propagation of sound in low-dimensional conducting structures

Attenuation of sound wave energy in layered conductors with several charge- carrier groups is investigated theoretically. The existence of a group with a quasi-one-dimensional energy spectrum is shown to affect the behaviour o f the rate of sound attenuation G in a magnetic field H fundamentally. Gian t oscillations, as well as resonant peaks of G depending on 1/H, are predic ted.