Induction Cyclotron Resonance

Abstract

An approximate theory is developed for the magnetic dipole response of a small semiconducting sphere placed in a cavity at a point of maximum microwave magnetic field. Experiments corroborate the prediction that electric fields induced in the particle lead to resonant absorption at an applied dc magnetic field free of depolarization (magnetoplasma) shifts. The effect may enable microwave determination of effective mass in materials having carrier concentrations well above the limit for conventional cyclotron resonance.