Study of proximity effect in superconductor/Au using scanning tunneling spectroscopy

Search for proximity effect between a-, c- and (103) oriented YBCO and Au was carried out using low temperature scanning tunneling microscopy at 4.2K. BCS-like conductance spectra were observed only at the small part of the surface of Au thin film deposited in-situ on the (103) oriented YBCO thin film made by coevaporation method