Known as the spin switch effect (SSE), the resistance of a ferromagnet/superconductor/ferromagnet (F/S/F) spin valve near its superconducting transition temperature Tc is different for parallel (RP) and antiparallel (RAP) configurations of the F layers. Here, we report the observation of the coexistence of the standard (RP>RAP) and inverse (RP<RAP) SSE in Ni₈₁Fe₁₉/Nb/Ni₈₁Fe₁₉/Ir₂₅Mn₇₅ spin valves. Our measurements reveal that the inverse SSE arises from a dissipative flow of vortices induced by stray magnetic fields from N\'eel domain-wall pairs in the F layers.
No takes yet. Share an insight, caveat, or question.
Zhu et al. (2009) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: