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Spin Hall effect-controlled magnetization dynamics in NiMnSb
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2015 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 117, no 17, 17E103Article in journal (Refereed) Published
Abstract [en]

We investigate the influence of a spin current generated from a platinum layer on the ferromagnetic resonance (FMR) properties of an adjacent ferromagnetic layer composed of the halfmetallic half-Heusler material NiMnSb. Spin Hall nano-oscillator devices are fabricated, and the technique of spin torque FMR is used to locally study the magnetic properties as in-plane anisotropies and resonance fields. A change in the FMR linewidth, in accordance with the additional spin torque produced by the spin Hall effect, is present for an applied dc current. For sufficiently large currents, this should yield auto-oscillations, which however are not achievable in the present device geometry.

Place, publisher, year, edition, pages
2015. Vol. 117, no 17, 17E103
Keyword [en]
Crystal symmetry, Ferromagnetic materials, Ferromagnetic resonance, Ferromagnetism, Spin dynamics, Auto-oscillations, Device geometries, Ferromagnetic layers, Ferromagnetic resonance (FMR), In-plane anisotropy, Magnetization dynamics, Nano-oscillator, Resonance field
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Identifiers
URN: urn:nbn:se:kth:diva-166932DOI: 10.1063/1.4907240ISI: 000354984100455Scopus ID: 2-s2.0-84923675885OAI: oai:DiVA.org:kth-166932DiVA: diva2:815164
Funder
Swedish Research CouncilSwedish Foundation for Strategic Research Knut and Alice Wallenberg Foundation, ICT-257159 "MACALO"EU, FP7, Seventh Framework Programme
Note

QC 20150529

Available from: 2015-05-29 Created: 2015-05-21 Last updated: 2017-12-04Bibliographically approved

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Åkerman, Johan

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