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arXiv · 2306.12910

Superconducting stripes in the hole-doped three-band Hubbard model

Boris Ponsioen·Sangwoo S. Chung·Philippe Corboz
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Abstract

We study the ground state properties of the hole-doped three-band Hubbard (Emery) model, describing the copper-oxygen planes of the cuprates, using large-scale 2D tensor network calculations. Our simulations reveal a period 4 stripe state with spin and weak charge order over an extended doping range beyond $\delta\sim0.12$ and stripes with larger periods at smaller doping. The period 4 stripe exhibits coexisting $d$-wave superconductivity in the doping range $0.15 \lesssim \delta < 0.25$, while at smaller doping around $\delta \sim 1/8$ we find a strong competition between superconducting and non-superconducting stripes, including also pair density-wave states with alternating sign structure on neighboring stripes, suggesting that the fate of superconductivity around 1/8 doping may be sensitive on the model parameters.

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Boris Ponsioen, Sangwoo S. Chung, Philippe Corboz. 2023-06-22. Superconducting stripes in the hole-doped three-band Hubbard model. https://doi.org/10.1103/physrevb.108.205154

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