Pairing properties of correlated three-leg ladders with strong interchain couplings near 1/3 filling
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arXiv
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| Format: | Preprint |
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2026
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| author | Yamada, Yushi Kaneko, Tatsuya Kakoi, Masataka Ueda, Ryota Kuroki, Kazuhiko |
| author_facet | Yamada, Yushi Kaneko, Tatsuya Kakoi, Masataka Ueda, Ryota Kuroki, Kazuhiko |
| contents | We investigate the ground-state properties of correlated three-leg ladders near 1/3 filling. We apply the density-matrix renormalization group method to the three-leg t-J ladder with strong interchain couplings and evaluate its pairing nature. When holes are doped into the spin-gapped state at 1/3 filling, we find that pair correlations develop with power-law decays while spin correlations decay exponentially. On the other hand, doping of electrons into the 1/3-filled state does not give rise to substantial pair correlations. We also discuss the hole-doped state in the three-leg Hubbard model to compare it with the pairing state in the t-J model. Our numerical demonstrations provide insights into the electronic properties of trilayer nickelate superconductors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_17812 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Pairing properties of correlated three-leg ladders with strong interchain couplings near 1/3 filling Yamada, Yushi Kaneko, Tatsuya Kakoi, Masataka Ueda, Ryota Kuroki, Kazuhiko Superconductivity Strongly Correlated Electrons We investigate the ground-state properties of correlated three-leg ladders near 1/3 filling. We apply the density-matrix renormalization group method to the three-leg t-J ladder with strong interchain couplings and evaluate its pairing nature. When holes are doped into the spin-gapped state at 1/3 filling, we find that pair correlations develop with power-law decays while spin correlations decay exponentially. On the other hand, doping of electrons into the 1/3-filled state does not give rise to substantial pair correlations. We also discuss the hole-doped state in the three-leg Hubbard model to compare it with the pairing state in the t-J model. Our numerical demonstrations provide insights into the electronic properties of trilayer nickelate superconductors. |
| title | Pairing properties of correlated three-leg ladders with strong interchain couplings near 1/3 filling |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2604.17812 |