Oscillations of the impedance of tungsten thin plates in a magnetic field

The surface impedance derivative of thin tungsten plates (the skin layer depth being comparable to the thickness) in circularly polarized radio-frequency fields (f=5 MHz) with respect to the magnetic field is investigated experimentally and theoretically. The magnetic field is perpendicular to the (001) face sample. It is shown hat in both polarizations the impedance oscillations are due to a group of holes lying at the inflection of the Fermi surface octahedron. The ''-'' polarization oscillation series can be completely attributed to the Gantmakher-Kaner radiofrequency effect. The impedance oscillations in the ''+'' polarization are due to both the Gantmakher-Kaner effect and doppleron excitation