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Magnetoelectronic Spin Echo

Arne Brataas·Gergely Zarand·Yaroslav Tserkovnyak·Gerrit E. W. Bauer
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Abstract

We predict a spin echo in electron transport through layered ferromagnetic-normal-ferromagnetic metal structures: whereas a spin current polarized perpendicular to the magnetization direction decays when traversing a single homogeneous ferromagnet on the scale of the ferromagnetic spin-coherence length, it reappears by adding a second identical but antiparallel ferromagnet. This re-entrant transverse spin current resembles the spin-echo effect in the magnetization of nuclei under pulsed excitations. We propose an experimental setup to measure the magnetoelectronic spin echo.

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Arne Brataas, Gergely Zarand, Yaroslav Tserkovnyak, Gerrit E. W. Bauer. 2003-11-17. Magnetoelectronic Spin Echo. https://doi.org/10.1103/physrevlett.91.166601

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