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Mechanism of High Temperature Superconductivity in a striped Hubbard Model

E. Arrigoni·E. Fradkin·S. A. Kivelson
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Abstract

It is shown, using asymptotically exact methods, that the two dimensional repulsive Hubbard model with strongly modulated interactions exhibits ``high temperature superconductivity". Specifically, the explicit modulation, which has the same symmetry as period 4 bond-centered stripes, breaks the system into an alternating array of more and less heavily hole doped, nearly decoupled two-leg ladders. It is shown that this system exhibits a pairing scale determined by the spin-gap of the undoped two-leg ladder, and a phase ordering temperature proportional to a low positive power of the inter-ladder coupling.

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E. Arrigoni, E. Fradkin, S. A. Kivelson. 2004-04-12. Mechanism of High Temperature Superconductivity in a striped Hubbard Model. https://doi.org/10.1103/physrevb.69.214519

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