Waveguide Perturbation Techniques In Microwave Semi-Conductor Diagnostics

DC transport properties (e. g. , conductivity, Hall effect, magneto-conductivity) are proportional to various averages of the electron-lattice relaxation time ( <T> , <T/sup 2/> , <T/sup 3/> , etc.) and hence give indirect information about the scattering mechanisms affecting the conduction process. With microwaves, the observation frequency can frequently be of the order of the scattering frequency 1/(2/spl pi <T> ). Under these conditions, microwave transport properties are complex and contain potentially more information concerning detailed scattering mechanisms than the analogous dc properties.