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arxiv: 1111.3135 · v1 · pith:NPCDPRRZnew · submitted 2011-11-14 · ❄️ cond-mat.str-el · cond-mat.supr-con

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

classification ❄️ cond-mat.str-el cond-mat.supr-con
keywords effectanomalousmodelbandbehaviorelectron-polaronelectronsheavy
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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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