title: Helicons, magnetoplasma edge, and faraday rotation in solid state plasmas at microwave frequencies.
abstract: The effect of magnetic field on propagation of electromagnetic waves through free carrier plasmas in semiconductors is discussed. The Faraday configuration and the parameter ranges omega(c),omega(p) >> omega and omega(c) >> tau(-1) are specifically considered. Dispersion of helicon waves, propagation near the magnetoplasma edge (omega(p)(2) = omegaomega(c)), and the Faraday rotation are developed in terms of the one-electron Drude theory. Microwave transmission measurements at 35 Gc/s on n-type InSb are presented. Experiments near the magnetoplasma edge yield the value of the static dielectric constant of the InSb lattice K(l) = 19.3 +/- 0.8. Faraday rotation, observed beyond the edge, is found to be extremely large. Some practical possibilities for this effect are considered.
authors.affiliation: Department of Physics, Purdue University,Lafayette, Indiana, USA.
authors.forename: J K
authors.initials: JK
authors.lastname: Furdyna