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Indications of coherence-incoherence crossover in layered transport

Urban Lundin·Ross H. McKenzie
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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).

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Urban Lundin, Ross H. McKenzie. 2002-11-27. Indications of coherence-incoherence crossover in layered transport. https://doi.org/10.1103/physrevb.68.081101

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