Superconductivity in PrNiO₂ Infinite-Layer Nickelates.

ABSTRACT: Several reports about infinite-layer nickelate thin films suggest that the superconducting critical temperature versus chemical doping phase diagram has a dome-like shape, similar to cuprates. Here, a highly reproducible superconducting state in undoped PrNiO₂ thin films grown on SrTiO₃ are demonstrated. Scanning transmission electron microscopy measurements show coherent infinite-layer phase with no visible stacking-fault defects, an overall high structural quality where possible unintentional chemical doping or interstitial oxygen, if present, sum well below the measurable threshold of the technique. X-ray absorption measurements show very sharp features at the Ni L_3,2-edges with a large linear dichroism, indicating the preferential hole occupation of Ni<

SUBMITTER: Sahib H 

PROVIDER: S-EPMC12016738 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature