Surface impedance oscillations in a metal plate in a perpendicular magnetic field
Abstract
A theory of oscillatory effects in the surface impedance of a metal plate in a magnetic field normal to its surface has been developed for the “corrugated cylinder” model of the Fermi surface. It is shown that in the case of nonspecular electron reflection from the plate surfaces with antisymmetric excitation, the main contribution to the impedance oscillations comes from modulation of the field in the skin layer. This modulation is due to two causes: first, surface current oscillations which result from diffuse electron reflection and which are an rf analog of the dc Sondheimer effect and, second, excitation of a weakly attenuated standing wave, i.e., a doppleron. The relative contributions of both effects depend on the magnetic field, the wave frequency, the plate thickness, and the reflection specularity. The amplitude of the Gantmakher-Kaner oscillations is small in comparison with that of the oscillations set up by these effects.