Magnetoacoustic Effects in Very Pure Cd

Abstract
Ultrasonic attenuation as a function of magnetic field intensity has been measured in very pure Cd at liquid-helium temperatures. The results are related to the dimensions of the Fermi surface using the usual phenomenological model for the magnetoacoustic effect. New resonances are observed, and an explanation in terms of cylindrical sections of the Fermi surface is offered. Finally, evidence for acoustic cyclotron resonance is presented, along with comments on the observation and interpretation of such phenomena.