title: Interacting electrons in disordered wires: Anderson localization and low-T transport.
abstract: We study the conductivity sigma(T) of interacting electrons in a low-dimensional disordered system at low temperature T. For weak interactions, the weak-localization regime crosses over with lowering T into a dephasing-induced "power-law hopping." As T is further decreased, the Anderson localization in Fock space crucially affects sigma(T), inducing a transition at T = T(c), so that sigma(T < T(c)) = 0. The critical behavior of sigma(T) above T(c) is ln sigma(T) proportional to -(T - T(c))(-1/2). The mechanism of transport in the critical regime is many-particle transitions between distant states in Fock space.
authors.affiliation: Institut für Nanotechnologie, Forschungszentrum Karlsruhe, 76021 Karlsruhe, Germany.
authors.forename: I V
authors.initials: IV
authors.lastname: Gornyi
authors.forename: A D
authors.initials: AD
authors.lastname: Mirlin
authors.forename: D G
authors.initials: DG
authors.lastname: Polyakov