Optical absorption and activated transport in polaronic systems

Details Optical absorption and activated transport in polaronic systems Optical absorption and activated transport in polaronic systems

2005-05-18

arxiv.org/abs/cond-mat/0505447v2

Phys. Rev. B 72, 104304 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 8 figures

Scientific paper

10.1103/PhysRevB.72.104304

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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