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Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires

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2009

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Moore, Thomas Arthur
Backes, Dirk
Rhensius, Jan
Heyderman, Laura J.
Thiele, J.-U.
Woltersdorf, Georg
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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-106150
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https://doi.org/10.1103/PhysRevB.80.132403
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Physical Review B. 2009, 80(13), 132403. Available under: doi: 10.1103/PhysRevB.80.132403

Zusammenfassung

We study the relationship between the damping (α) and the nonadiabaticity of the spin transport (β) in permalloy nanowires. α is engineered by Ho doping, and from the characteristics of the current-induced domain-wall velocity, determined by high-resolution x-ray magnetic circular-dichroism photoemission electron microscopy, β due to spin relaxation is measured. We find that β scales with α and conclude that the spin relaxation that leads to nonadiabatic spin torque originates from the same underlying mechanism as the angular momentum dissipation that causes viscous damping.

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530 Physik

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ISO 690MOORE, Thomas Arthur, Mathias KLÄUI, Lutz HEYNE, Philipp MÖHRKE, Dirk BACKES, Jan RHENSIUS, Ulrich RÜDIGER, Laura J. HEYDERMAN, J.-U. THIELE, Georg WOLTERSDORF, Christian H. BACK, Arantxa FRAILE RODRÍGUEZ, Frithjof NOLTING, Tevfik Onur MENTES, Miguel Ángel NIÑO, Andrea LOCATELLI, A. POTENZA, Helder MARCHETTO, Stuart CAVILL, Sarnjeet S. DHESI, 2009. Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires. In: Physical Review B. 2009, 80(13), 132403. Available under: doi: 10.1103/PhysRevB.80.132403
BibTex
@article{Moore2009Scali-5264,
  year={2009},
  doi={10.1103/PhysRevB.80.132403},
  title={Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires},
  number={13},
  volume={80},
  journal={Physical Review B},
  author={Moore, Thomas Arthur and Kläui, Mathias and Heyne, Lutz and Möhrke, Philipp and Backes, Dirk and Rhensius, Jan and Rüdiger, Ulrich and Heyderman, Laura J. and Thiele, J.-U. and Woltersdorf, Georg and Back, Christian H. and Fraile Rodríguez, Arantxa and Nolting, Frithjof and Mentes, Tevfik Onur and Niño, Miguel Ángel and Locatelli, Andrea and Potenza, A. and Marchetto, Helder and Cavill, Stuart and Dhesi, Sarnjeet S.},
  note={Article Number: 132403}
}
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