Control of propagating spin-wave attenuation by the spin-Hall effect
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Beach_Control of propagating.pdf
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3.02 MB
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Adobe PDF
Checksum (MD5)
6535d0d1909c37c4d56b02148bfe5fa3
Author(s)
Woo, Seonghoon
Beach, Geoffrey Stephen
Date Issued
September 2017
Journal
Journal of Applied Physics
Publisher
American Institute of Physics (AIP)
Citation
Woo, Seonghoon and Geoffrey S. D. Beach. “Control of Propagating Spin-Wave Attenuation by the Spin-Hall Effect.” Journal of Applied Physics 122, 9 (September 2017): 093901 © 2017 Author(s)
Version
Final published version
Abstract
The spin-Hall effect induced modification of the attenuation of propagating exchange-mode spin waves (SWs) is studied micromagnetically and analytically in heavy-metal/ferromagnet bilayers. Micromagnetic simulations of spin-wave propagation in Pt/NiFe show that at a relatively low current density of ∼ 6 × 10¹¹A/m², Gilbert damping is exactly balanced by the spin-Hall torque and long-distance SW transmission is possible. An analytical model is developed to explain the micromagnetic results and relate the current density to the characteristic attenuation length. The results suggest that the spin Hall effect can be used as an effective means to control the attenuation length of propagating spin waves in nanostructures.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/1.4999828
