Baker, A. A., Figueroa, A. I., Love, Christopher et al. (3 more authors) (2016) Anisotropic Absorption of Pure Spin Currents. Physical Review Letters. 047201. ISSN 1079-7114
Abstract
Spin transfer in magnetic multilayers offers the possibility of ultrafast, low-power device operation. We report a study of spin pumping in spin valves, demonstrating that a strong anisotropy of spin pumping from the source layer can be induced by an angular dependence of the total Gilbert damping parameter, α, in the spin sink layer. Using lab- and synchrotron-based ferromagnetic resonance, we show that an in-plane variation of damping in a crystalline Co50Fe50 layer leads to an anisotropic α in a polycrystalline Ni81Fe19 layer. This anisotropy is suppressed above the spin diffusion length in Cr, which is found to be 8 nm, and is independent of static exchange coupling in the spin valve. These results offer a valuable insight into the transmission and absorption of spin currents, and a mechanism by which enhanced spin torques and angular control may be realized for next-generation spintronic devices.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This content is made available by the publisher under a Creative Commons CC BY Licence |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 28 Jan 2016 11:12 |
Last Modified: | 23 Jan 2025 00:06 |
Published Version: | https://doi.org/10.1103/PhysRevLett.116.047201 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevLett.116.047201 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:94364 |
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Description: Anisotropic Absorption of Pure Spin Currents
Filename: PhysRevLett.116.047201.pdf
Description: PhysRevLett.116.047201