Are the high-Tc superconductors strongly correlated electron systems?

X. Q. Huang

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arXiv · 1103.4647

Are the high-Tc superconductors strongly correlated electron systems?

X. Q. Huang

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Abstract

In this paper, we argue that the high-temperature superconductors do not belong to strong correlated electron systems. It is shown that both the two-dimensional Hubbard and t-J models are inadequate for describing high temperature superconductivity. In our opinion, a superconducting phase should be an energy minimum electronic state which can be described in a new framework where the electron-electron interactions (both on-site Hubbard term and off-site term) and the electron-phonon interaction can be completely suppressed.

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X. Q. Huang. 2011-03-23. Are the high-Tc superconductors strongly correlated electron systems?. https://arxiv.org/abs/1103.4647

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