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Optical conductivity in a 2D model of the pseudogap state

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Abstract

A 2D model of the pseudogap state is considered on the basis of the scenario of strong electron scattering by short-range-order fluctuations of the “dielectric” (antiferromagnetic or charge density wave) type. A system of recurrence relations is constructed for a one-particle Green’s function and the vertex part, describing the interaction of electrons with an external field. This system takes into account all Feynman diagrams for electron scattering at short-range-order fluctuations. The results of detailed calculations of optical conductivity are given for various geometries (topologies) of the Fermi surface, demonstrating both the effects of pseudogap formation in the electron spectrum and the localization effects. The obtained results are in qualitative agreement with experimental data for underdoped HTSC cuprates.

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Authors and Affiliations

  1. Institute of Electrophysics, Ural Division, Russian Academy of Sciences, ul Komsomol’skaya 34, Yekaterinburg, 620016, Russia

    M. V. Sadovskii & N. A. Strigina

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  1. M. V. Sadovskii
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  2. N. A. Strigina
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__________

Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 122, No. 3, 2002, pp. 610–623.

Original Russian Text Copyright © 2002 by Sadovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Strigina.

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Sadovskii, M.V., Strigina, N.A. Optical conductivity in a 2D model of the pseudogap state. J. Exp. Theor. Phys. 95, 526–537 (2002). https://doi.org/10.1134/1.1513827

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