Optical absorption and activated transport in polaronic systems

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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.
7 pages, 8 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/95011

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0505447
 http://arxiv.org/abs/cond-mat/0505447
 Phys. Rev. B 72, 104304 (2005)
 doi:10.1103/PhysRevB.72.104304

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arXiv