Phenomenology of Conduction in Incoherent Layered Crystals

Abstract

A novel phenomenological approach to the analysis of the conductivities of incoherent layered crystals is presented. It is based on the fundamental relationship between the resistive anisotropy ${\sigma }_{ab}/{\sigma }_c$ and the ratio of the phase coherence lengths in the respective directions. We explore the model-independent consequences of a general assumption that the out-of-plane phase coherence length of single electrons is a short fixed distance of the order of interlayer spacing. Several topics are discussed: application of the scaling theory, magnetoresistivity, the effects of substitutions and the intermediate regime of conduction when both coherence lengths change with temperature, but at different rate.

Scheduled to appear in August 1, 2004 issue of Phys. Rev. B

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Cited by in corpus (3)

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• Transport enhancement from incoherent coupling between one-dimensional quantum conductors
• Out-of-plane fluctuation conductivity of layered superconductors in strong electric fields