We report on the magnetic anisotropy controlled modulation of the superconductivity in ${\text{La}}_{0.7}{\text{Ca}}_{0.3}{\text{MnO}}_3/{\text{YBa}}_2{\text{Cu}}_3{\text{O}}_{7-\delta }/{\text{La}}_{0.7}{\text{Ca}}_{0.3}{\text{MnO}}_3$ ferromagnet/superconductor/ferromagnet hybrids with biaxial easy axes. The magnetoresistance (MR) is determined by the local misalignment of the magnetizations in the two layers and exhibits a positive MR plateau for antiparallel alignment along the easy axes and negative MR peaks at the coercive field near the hard axes. This evidences the importance of spin-dependent interfacial scattering effects (as opposed to stray fields) in the MR behavior of superconducting oxide inverse spin switches.

• Received 8 February 2010

DOI:https://doi.org/10.1103/PhysRevB.81.094512