High magnetic field cyclotron resonance in CdS Explanation of the non-monotonic temperature dependence of the cyclotron mass

摘要

Recent cyclotron resonance experiments in n-type CdS at ultra-high magnetic fields have revealed a well-pronounced maximum of the electron cyclotron mass as a function of temperature. These experimental data are interpreted within a model which takes into account the interaction of the conduction electrons with LO phonons and with nonpolar optical phonons. The piezoelectric electron-phonon interaction and the electron scattering by randomly distributed defects with a short-range potential are also treated. We show that the observed behaviour of the cyclotron mass can be explained in terms of an interplay between several scattering mechanisms.