Superdiffusive Conduction: AC Conductivity with Correlated Noise
Fernando A. Oliveira, Rafael Morgado, Alex Hansen, J. M. Rubi
Abstract
We present evidence of the existence of a superdiffusive regime in systems with correlated disorder for which localization is suppressed. An expression for anomalous electrical conductivity at low frequencies is found by using a generalized Langevin equation whose memory function accounts for the interactions between the carriers. New mechanisms inducing a superdiffusive conductivity are discussed and experimental possibilities for observing that phenomenon in nanotubes and superlattices are presented.
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