Three-dimensional bond-order instability in infinite-layer nickelates due to nonlocal quantum interference
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
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2022
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| _version_ | 1866929209155256320 |
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| author | Onari, Seiichiro Kontani, Hiroshi |
| author_facet | Onari, Seiichiro Kontani, Hiroshi |
| contents | Recently discovered superconducting infinite-layer nickelates $R$NiO$_2$ ($R$=Nd, La, Pr) attracts increasing attention as a similar system to cuprates. Both $R$NiO$_2$ and YBCO cuprates display the three-dimensional (3D) CDW with wave vector ${\bf q}\sim(2π/3,0,q_z)$, while $q_z$ is non-zero and incommensurate in the former system. Here, we reveal that the characteristic CDW in $R$NiO$_2$ can be naturally explained as the quantum interference between paramagnons, by focusing on the following characteristics of $R$NiO$_2$: (i) prominent three-dimensionality in the Fermi surface and (ii) large self-hole-doping ($\sim 14$%). This mechanism predicts the emergence of the $d_{x^2-y^2}$-wave bond order at a secondary 3D nesting vector ${\bf q}^c\sim(2π/3,0,q^c_z)$ $(q^c_z=0.2π\sim 2π/3)$. The obtained strong bond fluctuations lead to the non-Fermi liquid electronic states and superconducting states in nickelates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_13784 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Three-dimensional bond-order instability in infinite-layer nickelates due to nonlocal quantum interference Onari, Seiichiro Kontani, Hiroshi Strongly Correlated Electrons Superconductivity Recently discovered superconducting infinite-layer nickelates $R$NiO$_2$ ($R$=Nd, La, Pr) attracts increasing attention as a similar system to cuprates. Both $R$NiO$_2$ and YBCO cuprates display the three-dimensional (3D) CDW with wave vector ${\bf q}\sim(2π/3,0,q_z)$, while $q_z$ is non-zero and incommensurate in the former system. Here, we reveal that the characteristic CDW in $R$NiO$_2$ can be naturally explained as the quantum interference between paramagnons, by focusing on the following characteristics of $R$NiO$_2$: (i) prominent three-dimensionality in the Fermi surface and (ii) large self-hole-doping ($\sim 14$%). This mechanism predicts the emergence of the $d_{x^2-y^2}$-wave bond order at a secondary 3D nesting vector ${\bf q}^c\sim(2π/3,0,q^c_z)$ $(q^c_z=0.2π\sim 2π/3)$. The obtained strong bond fluctuations lead to the non-Fermi liquid electronic states and superconducting states in nickelates. |
| title | Three-dimensional bond-order instability in infinite-layer nickelates due to nonlocal quantum interference |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2212.13784 |