Nonadiabatic spin transfer torque in high anisotropy magnetic nanowires with narrow domain walls

O. Boulle; J. Kimling; P. Warnicke; M. Kläui; U. Rüdiger; G. Malinowski; H.J.M. Swagten; B. Koopmans; C. Ulysse; G. Faini

doi:10.1103/PhysRevLett.101.216601

Nonadiabatic spin transfer torque in high anisotropy magnetic nanowires with narrow domain walls

O. Boulle, J. Kimling, P. Warnicke, M. Kläui, U. Rüdiger, G. Malinowski, H.J.M. Swagten, B. Koopmans, C. Ulysse, G. Faini

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Abstract

Current induced domain wall (DW) depinning of a narrow DW in 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.

Original language	English
Article number	216601
Pages (from-to)	216601-1/4
Number of pages	4
Journal	Physical Review Letters
Volume	101
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.101.216601
Publication status	Published - 2008

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title = "Nonadiabatic spin transfer torque in high anisotropy magnetic nanowires with narrow domain walls",

abstract = "Current induced domain wall (DW) depinning of a narrow DW in 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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T1 - Nonadiabatic spin transfer torque in high anisotropy magnetic nanowires with narrow domain walls

AU - Boulle, O.

AU - Kimling, J.

AU - Warnicke, P.

AU - Kläui, M.

AU - Rüdiger, U.

AU - Malinowski, G.

AU - Swagten, H.J.M.

AU - Koopmans, B.

AU - Ulysse, C.

AU - Faini, G.

PY - 2008

Y1 - 2008

N2 - Current induced domain wall (DW) depinning of a narrow DW in 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.

AB - Current induced domain wall (DW) depinning of a narrow DW in 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.

U2 - 10.1103/PhysRevLett.101.216601

DO - 10.1103/PhysRevLett.101.216601

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JO - Physical Review Letters

JF - Physical Review Letters

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M1 - 216601

ER -

Nonadiabatic spin transfer torque in high anisotropy magnetic nanowires with narrow domain walls

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