Interfacial charge transfer and persistent metallicity of ultrathin SrIrO₃/SrRuO₃ heterostructures.

ABSTRACT: Interface quantum materials have yielded a plethora of previously unknown phenomena, including unconventional superconductivity, topological phases, and possible Majorana fermions. Typically, such states are detected at the interface between two insulating constituents by electrical transport, but whether either material is conducting, transport techniques become insensitive to interfacial properties. To overcome these limitations, we use angle-resolved photoemission spectroscopy and molecular beam epitaxy to reveal the electronic structure, charge transfer, doping profile, and carrier effective masses in a layer-by-layer fashion for the interface between the Dirac nodal-line semimetal SrIrO₃ and the correlated metallic Weyl ferromagnet SrRuO₃. We find that electrons

SUBMITTER: Nelson JN 

PROVIDER: S-EPMC8816341 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature