Conductivity Tensor of an Anisotropic Quantum Plasma in a Uniform Magnetic Field

Abstract

The quantum magnetoconductivity tensor for a system in which the constant energy surfaces are ellipsoids tilted away from the direction of the dc magnetic field is derived. The results are applied to a system with cubic symmetry in which the Fermi surface consists of a set of ellipsoids. The dispersion relation for low-frequency magnetoplasma oscillations (helicons) is investigated, and some qualitative discussion of the attenuation of helicon waves in anisotropic materials is presented.