Robustness of the Van Hove scenario for high-T(c) superconductors |
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| Authors: | Irkhin V Yu Katanin A A Katsnelson M I |
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| Institution: | Institute of Metal Physics, 620219, Ekaterinburg, Russia. |
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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-T(c) compounds can take place in a broad enough range of the hole concentrations. The results are in qualitative agreement with the recent angle-resolved photoemission spectroscopy data on La 2CuO (4). |
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