Growth of [110] La2∕3Sr1∕3MnO3–YBa2Cu3O7 heterostructures

YBa2Cu3O7–La2∕3Sr1∕3MnO3 heterostructures of [110] orientation are grown to allow direct injection of spin polarized holes from the La2∕3Sr1∕3MnO3 into the CuO2 superconducting planes. The magnetic response of the structure at T<Tsc shows both diamagnetic and ferromagnetic moments with [001] direction as magnetic easy axis. While the superconducting transition temperature (Tsc) of these structures is sharp (ΔTsc≃2.5K), the critical current density (Jc) follows a dependence of the type Jc=Jo(1−T∕Tsc)3∕2 with highly suppressed Jo(≃2×104A∕cm2), indicating strong pair breaking effects of the ferromagnetic boundary.