Effects of rare-earth magnetism on the superconducting upper critical field in infinite-layer nickelates
| Autor: | Bai Yang Wang, Tiffany C. Wang, Yu-Te Hsu, Motoki Osada, Kyuho Lee, Chunjing Jia, Caitlin Duffy, Danfeng Li, Jennifer Fowlie, Malcolm R. Beasley, Thomas P. Devereaux, Ian R. Fisher, Nigel E. Hussey, Harold Y. Hwang |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Science Advances, 9, 1-6 Science Advances, 9, 20, pp. 1-6 |
| ISSN: | 2375-2548 |
| Popis: | The search for superconductivity in infinite-layer nickelates was motivated by analogy to the cuprates, and this perspective has framed much of the initial consideration of this material. However, a growing number of studies have highlighted the involvement of rare-earth orbitals; in that context, the consequences of varying the rare-earth element in the superconducting nickelates have been much debated. Here, we show notable differences in the magnitude and anisotropy of the superconducting upper critical field across the La-, Pr-, and Nd-nickelates. These distinctions originate from the 4 f electron characteristics of the rare-earth ions in the lattice: They are absent for La 3+ , nonmagnetic for the Pr 3+ singlet ground state, and magnetic for the Nd 3+ Kramer’s doublet. The unique polar and azimuthal angle-dependent magnetoresistance found in the Nd-nickelates can be understood to arise from the magnetic contribution of the Nd 3+ 4 f moments. Such robust and tunable superconductivity suggests potential in future high-field applications. |
| Databáze: | OpenAIRE |
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