Observation of Yu-Shiba-Rusinov-like states at the edge of CrBr₃/NbSe₂ heterostructure.

ABSTRACT: The hybrid ferromagnet-superconductor heterostructures have attracted extensive attention as they potentially host topological superconductivity. Relevant experimental signatures have recently been reported in CrBr₃/NbSe₂ ferromagnet-superconductor heterostructure, but controversies remain. Here, we reinvestigate CrBr₃/NbSe₂ by an ultralow temperature scanning tunneling microscope with higher spatial and energy resolutions. We find that the single-layer CrBr₃ film is insulating and acts likely as a vacuum barrier, the measured superconducting gap and vortex state on it are nearly the same as those of NbSe₂ substrate. Meanwhile, in-gap features are observed at the edges of CrBr₃ island, which display either a zero-

SUBMITTER: Li Y 

PROVIDER: S-EPMC11584852 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature