Infinite-layer nickelates show high-temperature superconductivity, and the experimental phase diagram agrees well with the one simulated within the dynamical vertex approximation (DΓA). Here, we compare the spin-fluctuation spectrum behind these calculations to resonant inelastic X-ray scattering experiments. The overall agreement is good. This independent cross-validation of the strength of spin fluctuations strongly supports the scenario, advanced by DΓA, that spin-fluctuations are the mediator of the superconductivity observed in nickelates.
@article{arxiv.2312.08260,
title = {Spin fluctuations sufficient to mediate superconductivity in nickelates},
author = {Paul Worm and Qisi Wang and Motoharu Kitatani and Izabela Biało and Qiang Gao and Xiaolin Ren and Jaewon Choi and Diana Csontosová and Ke-Jin Zhou and Xingjiang Zhou and Zhihai Zhu and Liang Si and Johan Chang and Jan M. Tomczak and Karsten Held},
journal= {arXiv preprint arXiv:2312.08260},
year = {2023}
}