Magnetic-field-induced Anderson localization in a strongly anisotropic conductor

Abstract
The weak-localization correction to the conductivity for a strongly anisotropic 2D electron gas is studied in the presence of a magnetic field. We find that the low-field regime with usual negative magnetoresistance is followed by an increase in the localization with a crossover to a 1D regime. In a 3D anisotropic conductor, the magnetic field will induce a transition from a diffusive 3D regine to a localized 2D or 1D regime.