Spin-polarized quasiparticle transport in exchange-split superconducting aluminum on europium sulfide

Abstract

We report on nonlocal spin transport in mesoscopic superconducting aluminum wires in contact with the ferromagnetic insulator europium sulfide. We find spin injection and long-range spin transport in the regime of the exchange splitting induced by europium sulfide. Our results demonstrate that spin transport in superconductors can be manipulated by ferromagnetic insulators, and opens a new path to control spin currents in superconductors.

RevTeX, 5 pages, 5 figures

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• Magnonic spin Joule heating and rectification effects
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• Inverse proximity effect in thin-film superconductor/magnet heterostructures with metallic and insulating magnets
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