Observation of metallic electronic structure in a single-atomic-layer oxide.

ABSTRACT: Correlated electrons in transition metal oxides exhibit a variety of emergent phases. When transition metal oxides are confined to a single-atomic-layer thickness, experiments so far have shown that they usually lose diverse properties and become insulators. In an attempt to extend the range of electronic phases of the single-atomic-layer oxide, we search for a metallic phase in a monolayer-thick epitaxial SrRuO₃ film. Combining atomic-scale epitaxy and angle-resolved photoemission measurements, we show that the monolayer SrRuO₃ is a strongly correlated metal. Systematic investigation reveals that the interplay between dimensionality and electronic correlation makes the monolayer SrRuO₃ an incoherent metal with orbital-selective correlation. Furthermore, th

SUBMITTER: Sohn B 

PROVIDER: S-EPMC8548526 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature