Electron iso-energetic surface openness and helicon type wave in metal

Abstract

The possibility of existence of the electromagnetic wave similar to the helicon type wave is analysed for metal anisotropy single crystal media having an openness of Fermi surface in the transverse direction to an external magnetic field. Usually helicon waves takes place due to specific conductivity tensor having off-diagonal Hall components being of much higher than diagonal these. However for open Fermi surface the only one transverse tensor component along the opennes is small before Hall that. On this reason the existence of spiral waves in metal single crystal conductor (for instance copper) is hardly possible when crystallographic direction [111] is strictly orthogonal to wave vector direction being oriented along [110].