| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Devereaux, T. P.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (4/4 displayed)
- 2022Directly characterizing the relative strength and momentum dependence of electron-phonon coupling using resonant inelastic x-ray scattering
- 2020Electronic structure of the parent compound of superconducting infinite-layer nickelatescitations
- 2016Directly characterizing the relative strength and momentum dependence of electron-phonon coupling using resonant inelastic x-ray scattering ...
- 2016Directly characterizing the relative strength and momentum dependence of electron-phonon coupling using resonant inelastic x-ray scatteringcitations
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article
Electronic structure of the parent compound of superconducting infinite-layer nickelates
Abstract
The search continues for nickel oxide-based materials with electronic properties similar to cuprate high-temperature superconductors<sup>1–10</sup>. The recent discovery of superconductivity in the doped infinite-layer nickelate NdNiO<sub>2</sub> (refs. <sup>11,12</sup>) has strengthened these efforts. Here, we use X-ray spectroscopy and density functional theory to show that the electronic structure of LaNiO<sub>2</sub> and NdNiO<sub>2</sub>, while similar to the cuprates, includes significant distinctions. Unlike cuprates, the rare-earth spacer layer in the infinite-layer nickelate supports a weakly interacting three-dimensional 5d metallic state, which hybridizes with a quasi-two-dimensional, strongly correlated state with 3dx2−y2 symmetry in the NiO<sub>2</sub> layers. Thus, the infinite-layer nickelate can be regarded as a sibling of the rare-earth intermetallics<sup>13–15</sup>, which are well known for heavy fermion behaviour, where the NiO<sub>2</sub> correlated layers play an analogous role to the 4f states in rare-earth heavy fermion compounds. This Kondo- or Anderson-lattice-like ‘oxide-intermetallic’ replaces the Mott insulator as the reference state from which superconductivity emerges upon doping.