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Optical absorption and activated transport in polaronic systems

G. Schubert·G. Wellein·A. Weiße·A. Alvermann·H. Fehske
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Abstract

We present exact results for the optical response in the one-dimensional Holstein model. In particular, by means of a refined kernel polynomial method, we calculate the ac and dc electrical conductivities at finite temperatures for a wide parameter range of electron phonon interaction. We analyze the deviations from the results of standard small polaron theory in the intermediate coupling regime and discuss non-adiabaticity effects in detail.

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G. Schubert, G. Wellein, A. Weiße, A. Alvermann, H. Fehske. 2005-07-22. Optical absorption and activated transport in polaronic systems. https://doi.org/10.1103/physrevb.72.104304

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