Dichotomy in Low- and High-energy Band Renormalizations in Trilayer Nickelate $La_{4}Ni_{3}O_{10}$: a Comparison with Cuprates
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
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2025
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| author | Du, X. Wang, Y. L. Li, Y. D. Cao, Y. T. Zhang, M. X. Pei, C. Y. Yang, J. M. Zhao, W. X. Zhai, K. Y. Liu, Z. K. Li, Z. W. Zhao, J. K. Liu, Z. T. Shen, D. W. Li, Z. He, Y. Chen, Y. L. Qi, Y. P. Guo, H. J. Yang, L. X. |
| author_facet | Du, X. Wang, Y. L. Li, Y. D. Cao, Y. T. Zhang, M. X. Pei, C. Y. Yang, J. M. Zhao, W. X. Zhai, K. Y. Liu, Z. K. Li, Z. W. Zhao, J. K. Liu, Z. T. Shen, D. W. Li, Z. He, Y. Chen, Y. L. Qi, Y. P. Guo, H. J. Yang, L. X. |
| contents | Band renormalizations comprise crucial insights for understanding the intricate roles of electron-boson coupling and electron correlation in emergent phenomena such as superconductivity. In this study, by combining high-resolution angle-resolved photoemission spectroscopy and theoretical calculations, we systematically investigate the electronic structure of the trilayer nickelate superconductor $La_{4}Ni_{3}O_{10}$ at ambient pressure. We reveal a dichotomy in the electronic band renormalizations of $La_{4}Ni_{3}O_{10}$ in comparison to cuprate superconductors. At a high energy scale of hundreds of meV, its band structure is strongly renormalized by electron correlation effect enhanced by Hund coupling. The resultant waterfall-like dispersions resemble the high-energy kinks in cuprate superconductors. However, at low energy scales of tens of meV, the dispersive bands are nearly featureless and devoid of any resolvable electron-boson interactions, in drastic contrast to the low-energy kinks observed in cuprates and other correlated 3d transition-metal compounds. The dichotomic band renormalizations highlight the disparity between nickelate and cuprate superconductors and emphasize the importance of strong electron-correlation in the superconductivity of Ruddlesden-Popper phase nickelates. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_08974 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dichotomy in Low- and High-energy Band Renormalizations in Trilayer Nickelate $La_{4}Ni_{3}O_{10}$: a Comparison with Cuprates Du, X. Wang, Y. L. Li, Y. D. Cao, Y. T. Zhang, M. X. Pei, C. Y. Yang, J. M. Zhao, W. X. Zhai, K. Y. Liu, Z. K. Li, Z. W. Zhao, J. K. Liu, Z. T. Shen, D. W. Li, Z. He, Y. Chen, Y. L. Qi, Y. P. Guo, H. J. Yang, L. X. Strongly Correlated Electrons Superconductivity Band renormalizations comprise crucial insights for understanding the intricate roles of electron-boson coupling and electron correlation in emergent phenomena such as superconductivity. In this study, by combining high-resolution angle-resolved photoemission spectroscopy and theoretical calculations, we systematically investigate the electronic structure of the trilayer nickelate superconductor $La_{4}Ni_{3}O_{10}$ at ambient pressure. We reveal a dichotomy in the electronic band renormalizations of $La_{4}Ni_{3}O_{10}$ in comparison to cuprate superconductors. At a high energy scale of hundreds of meV, its band structure is strongly renormalized by electron correlation effect enhanced by Hund coupling. The resultant waterfall-like dispersions resemble the high-energy kinks in cuprate superconductors. However, at low energy scales of tens of meV, the dispersive bands are nearly featureless and devoid of any resolvable electron-boson interactions, in drastic contrast to the low-energy kinks observed in cuprates and other correlated 3d transition-metal compounds. The dichotomic band renormalizations highlight the disparity between nickelate and cuprate superconductors and emphasize the importance of strong electron-correlation in the superconductivity of Ruddlesden-Popper phase nickelates. |
| title | Dichotomy in Low- and High-energy Band Renormalizations in Trilayer Nickelate $La_{4}Ni_{3}O_{10}$: a Comparison with Cuprates |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2509.08974 |