Dual role of stripe phase on superconducting correlation in a bilayer square lattice
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913839730130944 |
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| author | Guo, Ting Zhang, Lufeng Ma, Tianxing Lin, Hai-Qing |
| author_facet | Guo, Ting Zhang, Lufeng Ma, Tianxing Lin, Hai-Qing |
| contents | While the stripe phase has been observed not only in monolayer cuprates but also in bilayer cuprates, research on its behavior in bilayer cuprates has been limited. Using constrained path quantum Monte Carlo, we explore the effect of stripes on the bilayer square lattice. We find the system exhibits short-range antiferromagnetism, which is enhanced by stripes and is strongest when the electron density of the interstriped rows reaches half-filling. The hole doping concentration plays a crucial role in the interaction between stripes and superconductivity. The $d$-wave pairing is enhanced by stripe potential $V_0$ at the hole doping $δ_h=1/4$, whereas it is suppressed by stripe potential $V_0$ at the hole doping $δ_h=1/8$. We elucidate this phenomenon through an analysis of the magnetism of the interstriped rows. Furthermore, the effective $d$-wave pairing is stronger in the bilayer model compared to the monolayer model when stripes are introduced on the square lattice. Overall, our unbiased numerical simulations provide a further understanding of the crossed bilayer square lattice model. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_17212 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dual role of stripe phase on superconducting correlation in a bilayer square lattice Guo, Ting Zhang, Lufeng Ma, Tianxing Lin, Hai-Qing Strongly Correlated Electrons While the stripe phase has been observed not only in monolayer cuprates but also in bilayer cuprates, research on its behavior in bilayer cuprates has been limited. Using constrained path quantum Monte Carlo, we explore the effect of stripes on the bilayer square lattice. We find the system exhibits short-range antiferromagnetism, which is enhanced by stripes and is strongest when the electron density of the interstriped rows reaches half-filling. The hole doping concentration plays a crucial role in the interaction between stripes and superconductivity. The $d$-wave pairing is enhanced by stripe potential $V_0$ at the hole doping $δ_h=1/4$, whereas it is suppressed by stripe potential $V_0$ at the hole doping $δ_h=1/8$. We elucidate this phenomenon through an analysis of the magnetism of the interstriped rows. Furthermore, the effective $d$-wave pairing is stronger in the bilayer model compared to the monolayer model when stripes are introduced on the square lattice. Overall, our unbiased numerical simulations provide a further understanding of the crossed bilayer square lattice model. |
| title | Dual role of stripe phase on superconducting correlation in a bilayer square lattice |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2504.17212 |