Robustness of the van Hove scenario for high-Tc superconductors

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.

4 pages, LaTeX, 3 figures

References in corpus (3)

• Effects of the Van Hove singularities on magnetism and superconductivity in the t-t' Hubbard model: a parquet approach
• Filling-Control Metal-Insulator Transition in the Hubbard Model Studied by the Operator Projection Method
• On the violation of the Fermi-liquid picture in two-dimensional systems owing to the Van-Hove singularities

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