Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires

T. A. Moore; M. Kläui; L. Heyne; P. Möhrke; D. Backes; J. Rhensius; U. Rüdiger; L. J. Heyderman; J. U. Thiele; G. Woltersdorf; C. H. Back; A. Fraile Rodríguez; F. Nolting; T. O. Mentes; M. Á Niño; A. Locatelli; A. Potenza; H. Marchetto; S. Cavill; S. S. Dhesi

doi:10.1103/PhysRevB.80.132403

Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires

T. A. Moore, M. Kläui, L. Heyne, P. Möhrke, D. Backes, J. Rhensius, U. Rüdiger, L. J. Heyderman, J. U. Thiele, G. Woltersdorf, C. H. Back, A. Fraile Rodríguez, F. Nolting, T. O. Mentes, M. Á Niño, A. Locatelli, A. Potenza, H. Marchetto, S. Cavill, S. S. Dhesi

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25 Scopus citations

Abstract

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.

Original language	English
Article number	132403
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.80.132403
State	Published - 14 Oct 2009
Externally published	Yes

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Moore, T. A., Kläui, M., Heyne, L., Möhrke, P., Backes, D., Rhensius, J., Rüdiger, U., Heyderman, L. J., Thiele, J. U., Woltersdorf, G., Back, C. H., Fraile Rodríguez, A., Nolting, F., Mentes, T. O., Niño, M. Á., Locatelli, A., Potenza, A., Marchetto, H., Cavill, S., & Dhesi, S. S. (2009). Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires. Physical Review B - Condensed Matter and Materials Physics, 80(13), Article 132403. https://doi.org/10.1103/PhysRevB.80.132403

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abstract = "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.",

author = "Moore, {T. A.} and M. Kl{\"a}ui and L. Heyne and P. M{\"o}hrke and D. Backes and J. Rhensius and U. R{\"u}diger and Heyderman, {L. J.} and Thiele, {J. U.} and G. Woltersdorf and Back, {C. H.} and {Fraile Rodr{\'i}guez}, A. and F. Nolting and Mentes, {T. O.} and Ni{\~n}o, {M. {\'A}} and A. Locatelli and A. Potenza and H. Marchetto and S. Cavill and Dhesi, {S. S.}",

year = "2009",

month = oct,

day = "14",

doi = "10.1103/PhysRevB.80.132403",

language = "English",

volume = "80",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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Moore, TA, Kläui, M, Heyne, L, Möhrke, P, Backes, D, Rhensius, J, Rüdiger, U, Heyderman, LJ, Thiele, JU, Woltersdorf, G, Back, CH, Fraile Rodríguez, A, Nolting, F, Mentes, TO, Niño, MÁ, Locatelli, A, Potenza, A, Marchetto, H, Cavill, S & Dhesi, SS 2009, 'Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires', Physical Review B - Condensed Matter and Materials Physics, vol. 80, no. 13, 132403. https://doi.org/10.1103/PhysRevB.80.132403

TY - JOUR

T1 - Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires

AU - Moore, T. A.

AU - Kläui, M.

AU - Heyne, L.

AU - Möhrke, P.

AU - Backes, D.

AU - Rhensius, J.

AU - Rüdiger, U.

AU - Heyderman, L. J.

AU - Thiele, J. U.

AU - Woltersdorf, G.

AU - Back, C. H.

AU - Fraile Rodríguez, A.

AU - Nolting, F.

AU - Mentes, T. O.

AU - Niño, M. Á

AU - Locatelli, A.

AU - Potenza, A.

AU - Marchetto, H.

AU - Cavill, S.

AU - Dhesi, S. S.

PY - 2009/10/14

Y1 - 2009/10/14

N2 - 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.

AB - 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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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 13

M1 - 132403

ER -

Scaling of spin relaxation and angular momentum dissipation in permalloy nanowires

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