Electronic structure and magnetic correlations in trilayer nickelate superconductor La$_4$Ni$_3$O$_{10}$ under pressure
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866909221443862528 |
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| author | Leonov, I. V. |
| author_facet | Leonov, I. V. |
| contents | It has been recently shown that under pressure trilayer Ruddlesden-Popper nickelate La$_4$Ni$_3$O$_{10}$ (LNO) becomes superconducting below a critical temperature $\sim$20 K, in addition to the infinite-layer and bilayer systems. Motivated by this observation, we explore the effects of electron correlations on its electronic structure and magnetic properties using the advanced DFT+dynamical mean-field theory approach. Our results for the normal-state electronic structure and correlation effects in LNO have much in common with the infinite-layer and bilayer nickelates, with a remarkable site- and orbital-dependent renormalizations of the Ni $3d$ bands and notable incoherence of the Ni $d_{3z^2-r^2}$ states, caused by correlation effects. Our analysis of the Fermi surface and magnetic correlations suggests the emergence of competing spin and charge stripe states, implying the importance of in-plane spin fluctuations to explain superconductivity in this material. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_07350 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electronic structure and magnetic correlations in trilayer nickelate superconductor La$_4$Ni$_3$O$_{10}$ under pressure Leonov, I. V. Strongly Correlated Electrons Materials Science Superconductivity It has been recently shown that under pressure trilayer Ruddlesden-Popper nickelate La$_4$Ni$_3$O$_{10}$ (LNO) becomes superconducting below a critical temperature $\sim$20 K, in addition to the infinite-layer and bilayer systems. Motivated by this observation, we explore the effects of electron correlations on its electronic structure and magnetic properties using the advanced DFT+dynamical mean-field theory approach. Our results for the normal-state electronic structure and correlation effects in LNO have much in common with the infinite-layer and bilayer nickelates, with a remarkable site- and orbital-dependent renormalizations of the Ni $3d$ bands and notable incoherence of the Ni $d_{3z^2-r^2}$ states, caused by correlation effects. Our analysis of the Fermi surface and magnetic correlations suggests the emergence of competing spin and charge stripe states, implying the importance of in-plane spin fluctuations to explain superconductivity in this material. |
| title | Electronic structure and magnetic correlations in trilayer nickelate superconductor La$_4$Ni$_3$O$_{10}$ under pressure |
| topic | Strongly Correlated Electrons Materials Science Superconductivity |
| url | https://arxiv.org/abs/2401.07350 |