Nonadiabatic Spin Transfer Torque in High Anisotropy Magnetic Nanowires with Narrow Domain Walls

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PRL101_216601_2008.pdf
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2008
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Boulle, Olivier
Kimling, Johannes G.
Warnicke, Peter
Swagten, Henk J. M.
Koopmans, Bert
Ulysse, Christian
Faini, Giancarlo
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Physical Review Letters. 2008, 101, 216601. Available under: doi: 10.1103/PhysRevLett.101.216601
Zusammenfassung

Current induced domain wall (DW) depinning of a narrow DWin out-of-plane magnetized (Pt/Co)3/Pt multilayer elements is studied by magnetotransport. We find that for conventional measurements Joule heating effects conceal the real spin torque efficiency and so we use a measurement scheme at a constant sample temperature to unambiguously extract the spin torque contribution. From the variation of the depinning magnetic field with the current pulse amplitude we directly deduce the large nonadiabaticity factor in this material and we find that its amplitude is consistent with a momentum transfer mechanism.

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ISO 690BOULLE, Olivier, Johannes G. KIMLING, Peter WARNICKE, Mathias KLÄUI, Ulrich RÜDIGER, Gregory MALINOWSKI, Henk J. M. SWAGTEN, Bert KOOPMANS, Christian ULYSSE, Giancarlo FAINI, 2008. Nonadiabatic Spin Transfer Torque in High Anisotropy Magnetic Nanowires with Narrow Domain Walls. In: Physical Review Letters. 2008, 101, 216601. Available under: doi: 10.1103/PhysRevLett.101.216601
BibTex
@article{Boulle2008Nonad-9154,
  year={2008},
  doi={10.1103/PhysRevLett.101.216601},
  title={Nonadiabatic Spin Transfer Torque in High Anisotropy Magnetic Nanowires with Narrow Domain Walls},
  volume={101},
  journal={Physical Review Letters},
  author={Boulle, Olivier and Kimling, Johannes G. and Warnicke, Peter and Kläui, Mathias and Rüdiger, Ulrich and Malinowski, Gregory and Swagten, Henk J. M. and Koopmans, Bert and Ulysse, Christian and Faini, Giancarlo},
  note={Article Number: 216601}
}
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