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

C. Visani; N. M. Nemes; M. Rocci; Z. Sefrioui; C. Leon; S. G. E. te Velthuis; A. Hoffmann; M. R. Fitzsimmons; F. Simon; T. Feher; M. Garcia-Hernandez; J. Santamaria

doi:10.1103/PhysRevB.81.094512

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

C. Visani, N. M. Nemes, M. Rocci, Z. Sefrioui, C. Leon, S. G. E. te Velthuis, A. Hoffmann, M. R. Fitzsimmons, F. Simon, T. Feher, M. Garcia-Hernandez, J. Santamaria

DOI 10.1103/PhysRevB.81.094512 · Physical Review B

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Abstract

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

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	47	Pressure not reported	zero_resistance