We report the demonstration of hybrid high--superconductor–semiconductor tunnel junctions, enabling new interdisciplinary directions in condensed matter research. The devices are fabricated by our newly developed mechanical-bonding technique, resulting in high--superconductor–semiconductor tunnel diodes. Tunneling-spectra characterization of the hybrid junctions of combined with bulk GaAs, or a GaAs/AlGaAs quantum well, exhibits excess voltage and nonlinearity, similarly to spectra obtained in scanning-tunneling microscopy, and is in good agreement with theoretical predictions for a -wave-superconductor–normal-material junction. Additional junctions are demonstrated using combined with graphite or . Our results pave the way for new methods in unconventional superconductivity studies, novel materials, and quantum technology applications.
