The conductivity of the spin-polarized two-dimensional electron gas: Exchange/correlation and strong disorder effects

The conductivity of a spin-polarized two-dimensional electron gas is calcul ated and compared with the conductivity of the unpolarized electron gas. Di sorder effects are considered within the self-consistent current relaxation theory, which gives rise to a crossover point from metallic to insulating behavior. Many-body effects due to exchange and correlation are taken into account and are described by a local-field correction. Our calculations are in good agreement with recent experimental results on the magnetoresistanc e of silicon inversion layers. (C) 2000 MAIK "Nauka / Interperiodica".