Hybrid High-Temperature-Superconductor-Semiconductor Tunnel Diode
com-bined 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 withtheoretical predictions for a d-wave-superconductor–normal-material junction. Additional junctionsare demonstrated using Bi