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Changes in magnetic scattering anisotropy at a ferromagnetic/superconducting interface

K. Eid·H. Kurt·W. P. Pratt Jr.·J. Bass
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Abstract

We show that some metals and alloys (X = Cu, Ag, FeMn, or Cu and Ag combined with each other), sputtered between ferromagnetic Co and superconducting Nb, produce no change in current-perpendicular-to-plane magnetoresistance (CPP-MR) in a carefully designed CPP-spin-valve. In contrast, other metals (Ru or Au) or combinations (Cu or Ag combined with Au, Ru, or FeMn) change the CPP-MR, in some cases even reversing its sign. We ascribe these changes to activation of magnetic scattering anisotropies at a ferromagnetic/superconducting interface, apparently by strong spin-flipping between the Co and Nb layers.

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K. Eid, H. Kurt, W. P. Pratt Jr., J. Bass. 2004-04-16. Changes in magnetic scattering anisotropy at a ferromagnetic/superconducting interface. https://doi.org/10.1103/physrevb.70.100411

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