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Robustness of the van Hove scenario for high-Tc superconductors

V. Yu. Irkhin·A. A. Katanin·M. I. Katsnelson
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Abstract

The pinning of the Fermi level to the van Hove singularity and the formation of flat bands in the two-dimensional t-t' Hubbard model is investigated by the renormalization group technique. The "van-Hove" scenario of non-Fermi-liquid behavior for high-Tc compounds can take place in a broad enough range of the hole concentrations. The results are in qualitative agreement with the recent ARPES data on La2CuO4.

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V. Yu. Irkhin, A. A. Katanin, M. I. Katsnelson. 2002-04-16. Robustness of the van Hove scenario for high-Tc superconductors. https://doi.org/10.1103/physrevlett.89.076401

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