Interfacial Transport In Yba2cu3o7-Delta/La0.67ca0.33mno3 Heterostructures

YBa2Cu3O7-delta/La0.67Ca0.33MnO3 heterostuctures were fabricated and patterned to study the interfacial transport between a ferromagnet (FM) and a d(x2-y2)-Wave superconductor. Zero bias conductance peaks (ZBCPs) in the differential conductance spectra were observed in the interface where a YBCO layer shows a mixed c- and a-axis orientation. In contrast, a zero bias conductance dip (ZBCD) was observed in the interface with a purely c-axis oriented YBCO layer.