Condensed Matter


A More Complete Model for High-Temperature Superconductors

Authors: Tao Sun

To date, the Hubbard model and its strong coupling limit, the t-J model, serve as the canonical model for strongly correlated electron systems in solids. Approximating the Coulomb interaction by only the on-site term (Hubbard U-term), however, may not be sufficient to describe the essential physics of interacting electron systems. We develop a more complete model in which all the next leading order terms besides the on-site term are retained. Moreover, we discuss how the inclusion of these neglected interaction terms in the Hubbard model changes the t-J model.

Comments: 14 Pages.

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Submission history

[v1] 2017-04-05 12:49:32

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