INTERACTION OF DIFFUSION MODES AND SPIN FLUCTUATIONS NEAR THE METAL-INSULATOR TRANSITION IN DISORDERED SYSTEMS

Abstract
The results of the theory describing the electrons scattering on the impurities via diffusion mode interaction are presented. An application of this theory to describe a critical region of the metal-insulator transition is discussed. The spin-density instability in the system of the interacting disordered electrons is considered and the recent ESR measurements in uncompensated Si:P are discussed. In our opinion the results of these experiments favour the many-particle correlation effects though their interpretation requires going beyond the limits of the diffusion mode theory.