We show that in ${\mathrm{Pr}}_{0.5}{\mathrm{La}}_{0.2}{\mathrm{Ca}}_{0.3}{\mathrm{MnO}}_3/{\mathrm{YBa}}_2{\mathrm{Cu}}_3{\mathrm{O}}_7$ (PLCMO/YBCO) multilayers the low temperature state of YBCO is very resistive and resembles that of a granular superconductor or a frustrated Josephson-junction network. Notably, a coherent superconducting response can be restored with a large magnetic field which also suppresses the charge-orbital order in PLCMO. This coincidence suggests that the granular superconducting state of YBCO is induced by the charge-orbital order of PLCMO. The coupling mechanism and the nature of the induced inhomogeneous state in YBCO remain to be understood.

• Received 23 March 2016

DOI:https://doi.org/10.1103/PhysRevB.94.180503