Anomalous proximity effect in gold coated (110) $YB{a}_{2}C{u}_3{O}_{7-\delta }$ films: Penetration of the Andreev bound states

Itay Asulin, Amos Sharoni, Ofer Yulli +2

Scanning tunneling spectroscopy of (110) $YB{a}_{2}C{u}_3{O}_{7-\delta }/Au$ bi-layers reveal a proximity effect markedly different from the conventional one. While proximity-induced mini-gaps r…