Abstract
The discovery of superconductivity in infinite-layer nickelates has added a new family of materials to the fascinating growing class of unconventional superconductors. By incorporating the strongly correlated multiorbital nature of the low-energy electronic degrees of freedom, we compute the leading superconducting instability from magnetic fluctuations relevant for infinite-layer nickelates. Specifically, by properly including the doping dependence of the Ni and orbitals as well as the self-doping band, we uncover a transition from -wave pairing symmetry to nodal superconductivity, driven by strong fluctuations in the -dominated orbital states. We discuss the properties of the resulting superconducting condensates in light of recent tunneling and penetration depth experiments probing the detailed superconducting gap structure of these materials.
- Received 22 February 2022
- Accepted 19 July 2022
DOI:https://doi.org/10.1103/PhysRevLett.129.077002
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