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| Main Authors: | , |
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| Format: | Preprint |
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2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.10755 |
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| _version_ | 1866917332950974464 |
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| author | Polat, Gökmen Jeckelmann, Eric |
| author_facet | Polat, Gökmen Jeckelmann, Eric |
| contents | We study the Emery model (three-band Hubbard model) for superconducting cuprates on three distinct ladder-like lattices that are supercell of the CuO$_2$ plane and thus preserve the ratio of copper to oxygen atoms. Using the density-matrix renormalization group method we confirm that these Emery ladders are charge-transfer insulators for the hole concentration corresponding to undoped cuprates but become Luther-Emery liquids with enhanced pairing correlations upon doping. The preservation of the Cu to O ratio allows us to study the distribution of charges between these atoms in the Luther-Emery phase. We show that these Emery ladders can describe the relations between charge distribution, pairing strength, and interactions that have been observed in the Emery model on two-dimensional clusters and in experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_10755 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Pairing and charge distribution in Emery ladders preserving the ratio of Cu to O atoms Polat, Gökmen Jeckelmann, Eric Strongly Correlated Electrons Superconductivity We study the Emery model (three-band Hubbard model) for superconducting cuprates on three distinct ladder-like lattices that are supercell of the CuO$_2$ plane and thus preserve the ratio of copper to oxygen atoms. Using the density-matrix renormalization group method we confirm that these Emery ladders are charge-transfer insulators for the hole concentration corresponding to undoped cuprates but become Luther-Emery liquids with enhanced pairing correlations upon doping. The preservation of the Cu to O ratio allows us to study the distribution of charges between these atoms in the Luther-Emery phase. We show that these Emery ladders can describe the relations between charge distribution, pairing strength, and interactions that have been observed in the Emery model on two-dimensional clusters and in experiments. |
| title | Pairing and charge distribution in Emery ladders preserving the ratio of Cu to O atoms |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2603.10755 |