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| Format: | Preprint |
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2025
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| Online-Zugang: | https://arxiv.org/abs/2512.03806 |
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| _version_ | 1866908693372600320 |
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| author | Liu, Zhe Li, Jie Hu, Deyuan Ji, Bingke Zhang, Haoran Hao, Jiahao Dai, Yaomin Li, Qing Ou, Mengjun Xu, Bing Lu, Yi Wang, Meng Wen, Hai-Hu |
| author_facet | Liu, Zhe Li, Jie Hu, Deyuan Ji, Bingke Zhang, Haoran Hao, Jiahao Dai, Yaomin Li, Qing Ou, Mengjun Xu, Bing Lu, Yi Wang, Meng Wen, Hai-Hu |
| contents | We study the $ab$-plane and $c$-axis charge dynamics of La$_{4}$Ni$_{3}$O$_{10}$ using optical spectroscopy. While a pronounced Drude profile, i.e. metallic response, is observed in the $ab$-plane optical conductivity $σ_{1}^{ab}(ω)$, the $c$-axis optical spectra $σ_{1}^{c}(ω)$ exhibit semiconducting behavior. The zero-frequency extrapolation of the optical conductivity $σ_{1}(ω\rightarrow 0) \equiv 1/ρ_{\text{dc}}$ gives a resistivity anisotropy of $ρ_{c}/ρ_{ab} \simeq 366$ at 300~K for La$_{4}$Ni$_{3}$O$_{10}$, which is much larger than the values in iron-based superconductors but comparable to those in high-$T_{c}$ cuprates. The interband response is also highly anisotropic, showing salient orbital selectivity for light polarized in the $ab$ plane and along the $c$ axis. The interband-transition peaks in both $σ_{1}^{ab}(ω)$ and $σ_{1}^{c}(ω)$ are located at lower energies compared to density-functional-theory predictions, signifying considerable electronic correlations. By investigating the spectral weight transfer, we find that in the pristine phase, Coulomb correlations have a marked impact on the charge dynamics of \LNO, whereas in the density-wave state, a gap opens with the Ni-$d_{z^{2}}$ orbital being involved. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_03806 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Highly Anisotropic Charge Dynamics and Spectral Weight Redistribution in the Trilayer Nickelate La$_{4}$Ni$_{3}$O$_{10}$ Liu, Zhe Li, Jie Hu, Deyuan Ji, Bingke Zhang, Haoran Hao, Jiahao Dai, Yaomin Li, Qing Ou, Mengjun Xu, Bing Lu, Yi Wang, Meng Wen, Hai-Hu Superconductivity We study the $ab$-plane and $c$-axis charge dynamics of La$_{4}$Ni$_{3}$O$_{10}$ using optical spectroscopy. While a pronounced Drude profile, i.e. metallic response, is observed in the $ab$-plane optical conductivity $σ_{1}^{ab}(ω)$, the $c$-axis optical spectra $σ_{1}^{c}(ω)$ exhibit semiconducting behavior. The zero-frequency extrapolation of the optical conductivity $σ_{1}(ω\rightarrow 0) \equiv 1/ρ_{\text{dc}}$ gives a resistivity anisotropy of $ρ_{c}/ρ_{ab} \simeq 366$ at 300~K for La$_{4}$Ni$_{3}$O$_{10}$, which is much larger than the values in iron-based superconductors but comparable to those in high-$T_{c}$ cuprates. The interband response is also highly anisotropic, showing salient orbital selectivity for light polarized in the $ab$ plane and along the $c$ axis. The interband-transition peaks in both $σ_{1}^{ab}(ω)$ and $σ_{1}^{c}(ω)$ are located at lower energies compared to density-functional-theory predictions, signifying considerable electronic correlations. By investigating the spectral weight transfer, we find that in the pristine phase, Coulomb correlations have a marked impact on the charge dynamics of \LNO, whereas in the density-wave state, a gap opens with the Ni-$d_{z^{2}}$ orbital being involved. |
| title | Highly Anisotropic Charge Dynamics and Spectral Weight Redistribution in the Trilayer Nickelate La$_{4}$Ni$_{3}$O$_{10}$ |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2512.03806 |