Unidirectional propagation of magnetostatic surface spin waves at a magnetic film surface
Name
Ross_Unidirectional propagation.pdf
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1.36 MB
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Checksum (MD5)
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Author(s)
Wong, Kin L.
Bi, Lei
Bao, Mingqiang
Wen, Qiye
Chatelon, Jean Pierre
Lin, Yen-Ting
Zhang, Huaiwu
Wang, Kang L.
Ross, Caroline A.
Date Issued
December 2014
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Wong, Kin L., Lei Bi, Mingqiang Bao, Qiye Wen, Jean Pierre Chatelon, Yen-Ting Lin, C. A. Ross, Huaiwu Zhang, and Kang L. Wang. “Unidirectional Propagation of Magnetostatic Surface Spin Waves at a Magnetic Film Surface.” Applied Physics Letters 105, no. 23 (December 8, 2014): 232403. © 2014 AIP Publishing LLC
Version
Final published version
Abstract
An analytical expression for the amplitudes of magnetostatic surface spin waves (MSSWs) propagating in opposite directions at a magnetic film surface is presented. This shows that for a given magnetic field H, it is forbidden for an independent MSSW to propagate along the direction of -[arrow over H] x -[arrow overn] where [arrow over n] is the surface normal. This unidirectional propagation property is confirmed by experiments with both permalloy and yttrium iron garnet films of different film thicknesses, and has implications in the design of spin-wave devices such as isolators and spin-wave diodes.
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.
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DOI of Published Version
https://doi.org/10.1063/1.4903742
