Dynamical mean field theory of small polaron transport

Preprint

24 June 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0306593

Abstract

We present a unified view of the transport properties of small-polarons in the Holstein model at low carrier densities, based on the Dynamical Mean Field Theory. The nonperturbative nature of the approach allows us to study the crossover from classical activated motion at high temperatures to coherent motion at low temperatures. Large quantitative discrepancies from the standard polaronic formulae are found. The scaling properties of the resistivity are analysed, and a simple interpolation formula is proposed in the nonadiabatic regime.

Keywords

DYNAMICAL MEAN FIELD
POLARON TRANSPORT
MEAN FIELD THEORY
SMALL POLARON
INTERPOLATION
RESISTIVITY
POLARONS

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Version 1, 2003-06-24, ArXiv

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