Domain-Wall Depinning Assisted by Pure Spin Currents

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2010_PhysRevLett_Domain.pdf
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2010
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Nievendick, Jan
Backes, Dirk
Rhensius, Jan
Moore, Thomas A.
Niño, Miguel Ángel
Locatelli, Andrea
Mentes, Tevfik Onur
Schmidsfeld, Alexander von
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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 T/(A/m²), 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.

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ISO 690ILGAZ, Dennis, Jan NIEVENDICK, Lutz HEYNE, Dirk BACKES, Jan RHENSIUS, Thomas A. MOORE, Miguel Ángel NIÑO, Andrea LOCATELLI, Tevfik Onur MENTES, Alexander von SCHMIDSFELD, Arndt von BIEREN, Stephen KRZYK, Laura Jane HEYDERMAN, Mathias KLÄUI, 2010. Domain-Wall Depinning Assisted by Pure Spin Currents. In: Physical Review Letters. 2010, 105, 076601. Available under: doi: 10.1103/PhysRevLett.105.076601
BibTex
@article{Ilgaz2010Domai-8890,
  year={2010},
  doi={10.1103/PhysRevLett.105.076601},
  title={Domain-Wall Depinning Assisted by Pure Spin Currents},
  volume={105},
  journal={Physical Review Letters},
  author={Ilgaz, Dennis and Nievendick, Jan and Heyne, Lutz and Backes, Dirk and Rhensius, Jan and Moore, Thomas A. and Niño, Miguel Ángel and Locatelli, Andrea and Mentes, Tevfik Onur and Schmidsfeld, Alexander von and Bieren, Arndt von and Krzyk, Stephen and Heyderman, Laura Jane and Kläui, Mathias},
  note={Article Number: 076601}
}
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