paper

Indications of coherence-incoherence crossover in layered transport

arXiv:cond-mat/0211612 · doi:10.1103/PhysRevB.68.081101

Abstract

For many layered metals the temperature dependence of the interlayer resistance has a different behavior than the intralayer resistance. In order to better understand interlayer transport we consider a concrete model which exhibits this behavior. A small polaron model is used to illustrate how the interlayer transport is related to the coherence of quasi-particles within the layers. Explicit results are given for the electron spectral function, interlayer optical conductivity and the interlayer magnetoresistance. All these quantities have two contributions: one coherent (dominant at low temperatures) and one incoherent (dominant at high temperatures).

6 pages, 4 figures, REVTEX4

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