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arXiv · 1111.3135

Anomalous resistivity and the electron-polaron effect in the two-band Hubbard model with one narrow band

M. Yu. Kagan·V. V. Val'kov
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Abstract

We search for anomalous normal and superconductive behavior in the two-band Hubbard model with one narrow band. We analyze the influence of electron-polaron effect and Altshuler-Aronov effect on effective mass enhancement and scattering times of heavy and light components in the clean case. We find anomalous behavior of resistivity at high temperatures $T>W_{h}^{*}$ both in 3D and 2D situation. The SC instability in the model is governed by enhanced Kohn-Luttinger effect for p-wave pairing of heavy electrons via polarization of light electrons.

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M. Yu. Kagan, V. V. Val'kov. 2011-11-14. Anomalous resistivity and the electron-polaron effect in the two-band Hubbard model with one narrow band. https://doi.org/10.1063/1.3552118

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