FERMI-LIQUID EFFECTS ON HIGH-FREQUENCY WAVE PROPAGATION IN SIMPLE METALS

The propagation characteristics of high-frequency waves (HFW) which occur in simple metals near the Azbel'-Kaner cyclotron resonances are discussed in detail. In particular, it is emphasized that, while the existence of such wave propagation may be understood using a noninteracting-electron-gas model of the conduction electrons, the HFW are sensitive in principle to direct electron-electron interactions. Using the Landau-Silin phenomenological description of the Fermi liquid, it is shown that the HFW offer the possibility of direct measurement of all but the lowest moments of the spin-independent electron correlation function. © 1968 The American Physical Society.