Robustness of the van Hove scenario for high-Tc superconductors
classification
❄️ cond-mat
keywords
high-tchovescenarioagreementarpesbandsbehaviorbroad
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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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