THE ANDERSON METAL-INSULATOR-TRANSITION IN QUASI-1D SYSTEMS - IMPLICATION TO POLYACETYLENE

The recent experimental data on the low temperature dependence of conductivity and magnetoresistance of 'new' (i.e. highly oriented highly conducting) polyacetylene are discussed within the model of a quasi-ID metal. It is suggested that the high anisotropy of the internal kinetic parameters, which is required for the explanation of these data, could be additionally produced by the anisotropy of the electron scattering by dopants. The dopants provide a strong forward scattering of electrons, while a backward scattering remains unaffected by them. The phonon scattering leads only to the suppression of the weak localization effects.