Collective spin excitations in trilayer nickelate La$_4$Ni$_3$O$_{10}$
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arXiv
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2026
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| author | Chan, Ying Li, Yuehong Yan, Yujie Hong, Xunyang Wang, Tianren Cantarino, Marli dos Reis Zhu, Yinghao Zhang, Enkang Chen, Lixing Okamoto, Jun Huang, Hsiao-Yu Huang, Di-Jing Brookes, N. B. Chang, Johan Shen, Yao Zhao, Jun Wang, Qisi |
| author_facet | Chan, Ying Li, Yuehong Yan, Yujie Hong, Xunyang Wang, Tianren Cantarino, Marli dos Reis Zhu, Yinghao Zhang, Enkang Chen, Lixing Okamoto, Jun Huang, Hsiao-Yu Huang, Di-Jing Brookes, N. B. Chang, Johan Shen, Yao Zhao, Jun Wang, Qisi |
| contents | Ruddlesden-Popper (RP) nickelates have recently emerged as a new family of high-temperature superconductors. In bilayer RP nickelates, magnetic excitations with large exchange couplings have been observed, supporting a spin-mediated pairing mechanism. Whether comparable spin correlations persist in trilayer nickelates, however, remains unknown. Here, we present a Ni $L$-edge resonant inelastic X-ray scattering (RIXS) study of La$_4$Ni$_3$O$_{10}$ single crystals. While the orbital excitations remain similar to those of La$_3$Ni$_2$O$_{7}$, the collective spin excitations in La$_4$Ni$_3$O$_{10}$ exhibit a comparable bandwidth of about $60$ meV but substantially suppressed spectral weight, implying a weaker electronic correlation in the trilayer compounds. Our results underscore the three-dimensional and multi-orbital electronic character in La$_4$Ni$_3$O$_{10}$, highlighting important differences from the bilayer nickelates. These findings provide crucial insights into the evolution of magnetism across the RP nickelate family and its connection to superconductivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_04643 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Collective spin excitations in trilayer nickelate La$_4$Ni$_3$O$_{10}$ Chan, Ying Li, Yuehong Yan, Yujie Hong, Xunyang Wang, Tianren Cantarino, Marli dos Reis Zhu, Yinghao Zhang, Enkang Chen, Lixing Okamoto, Jun Huang, Hsiao-Yu Huang, Di-Jing Brookes, N. B. Chang, Johan Shen, Yao Zhao, Jun Wang, Qisi Superconductivity Strongly Correlated Electrons Ruddlesden-Popper (RP) nickelates have recently emerged as a new family of high-temperature superconductors. In bilayer RP nickelates, magnetic excitations with large exchange couplings have been observed, supporting a spin-mediated pairing mechanism. Whether comparable spin correlations persist in trilayer nickelates, however, remains unknown. Here, we present a Ni $L$-edge resonant inelastic X-ray scattering (RIXS) study of La$_4$Ni$_3$O$_{10}$ single crystals. While the orbital excitations remain similar to those of La$_3$Ni$_2$O$_{7}$, the collective spin excitations in La$_4$Ni$_3$O$_{10}$ exhibit a comparable bandwidth of about $60$ meV but substantially suppressed spectral weight, implying a weaker electronic correlation in the trilayer compounds. Our results underscore the three-dimensional and multi-orbital electronic character in La$_4$Ni$_3$O$_{10}$, highlighting important differences from the bilayer nickelates. These findings provide crucial insights into the evolution of magnetism across the RP nickelate family and its connection to superconductivity. |
| title | Collective spin excitations in trilayer nickelate La$_4$Ni$_3$O$_{10}$ |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2604.04643 |