Study of ARPES data and d-wave superconductivity using electronic models in two dimensions

A. Moreo; A. Nazarenko; S. Haas; A. Sandvik; E. Dagotto

doi:10.1016/0022-3697(95)00106-9

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Study of ARPES data and d-wave superconductivity using electronic models in two dimensions

A. Moreo·A. Nazarenko·S. Haas·A. Sandvik·E. Dagotto

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Abstract

We review the results of an extensive investigation of photoemission spectral weight using electronic models for the high-Tc superconductors. Here we show that some recently reported unusual features of the cuprates namely the presence of (i) flat bands, (ii) small quasiparticle bandwidths, and (iii) antiferromagnetically induced weight, have all a natural explanation within the context of holes moving in the presence of robust antiferromagnetic correlations. Introducing interactions among the hole carriers, a model is constructed which has ${\rm d_{x^2 - y^2}}$ superconductivity, an optimal doping of $\sim 15\%$ (caused by the presence of a large density of states at the top of the valence band), and a critical temperature $\sim 100K$.

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A. Moreo, A. Nazarenko, S. Haas, A. Sandvik, E. Dagotto. 1995-07-06. Study of ARPES data and d-wave superconductivity using electronic models in two dimensions. https://doi.org/10.1016/0022-3697(95)00106-9

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