Anomalous metallic state underdoped infinite-layer nickelate superconducting thin films.

ABSTRACT: To date, the nature of the anomalous metallic state in two-dimensional systems remains unclear. In this study, we present the observation of a quantum superconductor-to-metal transition in underdoped Nd_0.85Sr_0.15NiO₂ infinite-layer superconducting thin films, induced by a magnetic field. When a magnetic field perpendicular to the film is applied, we observed a robust intervening anomalous metallic state, characterized by a saturating resistance at low temperatures. The disappearance of Hall resistance and a huge positive magnetoresistance are the other two characteristics of boson abnormal metal state, just like the resistance tends to be saturated at low temperature. The magnetic field-regulated Nd_1-xSr_xNiO₂ infinite-layer

SUBMITTER: Shao TN 

PROVIDER: S-EPMC12280135 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature