Domain-wall depinning assisted by pure spin currents (CROSBI ID 769138)
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Podaci o odgovornosti
Tafra, E. ; Ilgaz, D. ; Nievendick, J. ; Heyne, L. ; Backes, D ; Moore, T.A. ; Nino, M.A. ; Locatelli, A. ; Mentes, T.O. ; Schmidsfeld, A.v. ; Bieren, A.v. ; Rhensius, J. ; Krzyk, S. ; Heidler, J. ; Heyderman, L.J. ; Kläui, M.
engleski
Domain-wall depinning assisted by pure spin currents
We study the depinning of domain walls by pure diffusive spin currents in a nonlocal spin valve structure based on two ferromagnetic Permalloy elements with copper as the nonmagnetic spin conduit. The injected spin current is absorbed by the second Permalloy structure with a domain wall, and from the dependence of the wall depinning field on the spin current density we find an efficiency of 6 x 10^-14 Tm^2/A, which is more than an order of magnitude larger than for conventional current induced domain-wall motion. Theoretically we find that this high efficiency arises from the surface torques exerted by the absorbed spin current that lead to efficient depinning.
magnetic domain wall depinnig; pure diffusive spin currents; non-local spin valves
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Podaci o izdanju
Elettra Highlights 2009 - 10
2010.
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