@misc{chaloupka2025superconductivity,
  title={Superconductivity in the spin-state crossover materials: Nickelates with planar-coordinated low-spin Ni$^{2+}$ ions},
  author={Jiří Chaloupka and Giniyat Khaliullin},
  year={2025},
  eprint={2506.16362},
  archivePrefix={arXiv},
  primaryClass={cond-mat.str-el},
  url={https://arxiv.org/abs/2506.16362}
}