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| Format: | Preprint |
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2025
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| Online-Zugang: | https://arxiv.org/abs/2501.10296 |
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| author | Scheie, A. Laurell, P. Thomas, J. Sharma, V. Kolesnikov, A. I. Granroth, G. E. Zhang, Q. Lake, B. Mihalik Jr., M. Bewley, R. I. Eccleston, R. S. Akimitsu, J. Dagotto, E. Batista, C. D. Alvarez, G. Johnston, S. Tennant, D. A. |
| author_facet | Scheie, A. Laurell, P. Thomas, J. Sharma, V. Kolesnikov, A. I. Granroth, G. E. Zhang, Q. Lake, B. Mihalik Jr., M. Bewley, R. I. Eccleston, R. S. Akimitsu, J. Dagotto, E. Batista, C. D. Alvarez, G. Johnston, S. Tennant, D. A. |
| contents | We investigate the spin dynamics of the cuprate ladder Sr$_{2.5}$Ca$_{11.5}$Cu$_{24}$O$_{41}$ to elucidate the behavior of its intrinsically doped holes. Combining high-resolution neutron spectroscopy and density matrix renormalization group calculations enables a comprehensive analysis of the collective magnetic dynamics. We find a general absence of magnetic signatures from unpaired charges, indicating holes within the system form strongly bound localized Cooper pairs. A one-band Hubbard model fails to match the spectral features but a straightforward extension to a large attractive nearest-neighbor interaction quantitatively explains our results. Our finding shows the significance of additional interactions beyond the long-predicted quantum spin pairing in the ($d$-wave) charge pairing process. Considering the parallels between ladders and two-dimensional cuprates, these results are potentially relevant for square lattices as well. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_10296 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cooper-Pair Localization in the Magnetic Dynamics of a Cuprate Ladder Scheie, A. Laurell, P. Thomas, J. Sharma, V. Kolesnikov, A. I. Granroth, G. E. Zhang, Q. Lake, B. Mihalik Jr., M. Bewley, R. I. Eccleston, R. S. Akimitsu, J. Dagotto, E. Batista, C. D. Alvarez, G. Johnston, S. Tennant, D. A. Strongly Correlated Electrons Superconductivity We investigate the spin dynamics of the cuprate ladder Sr$_{2.5}$Ca$_{11.5}$Cu$_{24}$O$_{41}$ to elucidate the behavior of its intrinsically doped holes. Combining high-resolution neutron spectroscopy and density matrix renormalization group calculations enables a comprehensive analysis of the collective magnetic dynamics. We find a general absence of magnetic signatures from unpaired charges, indicating holes within the system form strongly bound localized Cooper pairs. A one-band Hubbard model fails to match the spectral features but a straightforward extension to a large attractive nearest-neighbor interaction quantitatively explains our results. Our finding shows the significance of additional interactions beyond the long-predicted quantum spin pairing in the ($d$-wave) charge pairing process. Considering the parallels between ladders and two-dimensional cuprates, these results are potentially relevant for square lattices as well. |
| title | Cooper-Pair Localization in the Magnetic Dynamics of a Cuprate Ladder |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2501.10296 |