Huge nonequilibrium magnetoresistance in hybrid superconducting spin valves

F. Giazotto; F. Taddei; Rosario Fazio; F. Beltram

doi:10.1063/1.2220001

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Huge nonequilibrium magnetoresistance in hybrid superconducting spin valves

F. Giazotto·F. Taddei·Rosario Fazio·F. Beltram

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Abstract

A hybrid ferromagnet-superconductor spin valve is proposed. Its operation relies on the interplay between nonequilibrium transport and proximity-induced exchange coupling in superconductors. Huge tunnel magnetoresistance values as large as some 10^6% can be achieved in suitable ferromagnet-superconductor combinations under proper voltage biasing. The controllable spin-filter nature of the structure combined with its intrinsic simplicity make this setup attractive for low-temperature spintronic applications where reduced power dissipation is an additional requirement.

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F. Giazotto, F. Taddei, Rosario Fazio, F. Beltram. 2006-03-21. Huge nonequilibrium magnetoresistance in hybrid superconducting spin valves. https://doi.org/10.1063/1.2220001

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