Directionally controlled superconductivity in ferromagnet/superconductor/ferromagnet trilayers with biaxial easy axes

We report on the magnetic anisotropy controlled modulation of the superconductivity in La0.7Ca0.3MnO3/YBa2Cu3O7-delta/La0.7Ca0.3MnO3 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.