Induced superconductivity in hybrid Au/YBa₂Cu₃O_7-x electrodes on vicinal substrates.

ABSTRACT: Superconducting electrodes are an integral part of hybrid Josephson junctions used in many applications including quantum technologies. We report on the fabrication and characterization of superconducting hybrid Au/YBa₂Cu₃O_7-x (YBCO) electrodes on vicinal substrates. In these structures, superconducting CuO₂-planes face the gold film, resulting in a higher value and smaller variation of the induced energy gap compared to conventional Au/YBCO electrodes based on films with the c-axis normal to the substrate surface. Using scanning tunneling microscopy, we observe an energy gap of about 10-17 meV at the surface of the 15- nm-thick gold layer deposited in situ atop the YBCO film. To study the origin of this gap, we fabricate nanoconstrictions from t

SUBMITTER: Gundareva I 

PROVIDER: S-EPMC12402209 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature