Fig. 1
From: Induced superconductivity in hybrid Au/YBa2Cu3O7−x electrodes on vicinal substrates
Au/YBCO electrodes. (a) Evolution of the order parameter in the hybrid heterostructure, where ML is a mediating layer, Δs and Δind are an energy gap in a superconductor and an induced energy gap, respectively. (b) YBCO unit cell. (c) Sketch of the conventional hybrid high-Tc electrode, where the c-axis is normal and the CuO2 planes are parallel to the film surface. (d) Sketch of the hybrid device based on vicinal substrates, where the c-axis is inclined towards the substrate surface normal. A schematic illustration of the order parameter variation in (c) and (d) is shown in a scale bar on the right side. (e) A schematic representation of an STM (right side) and MAR spectroscopy (left side) used to study induced order parameter in gold. Normal-state domains in the constriction neck appearing in the YBCO and gold layers when the bias current exceeds the critical current are indicated in red and pink, respectively. Superconductor/normal metal/superconductor interfaces in the gold layer are indicated by solid black lines. The black arrow in the right panel shows a tunneling current. S indicates the superconductor. 3D images were created in Blender 3.2.14 (www.blender.org).
