Demonstration of a robust magnonic spin wave interferometer
Name
Demonstration of a.pdf
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1.18 MB
Format
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Checksum (MD5)
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Author(s)
Kanazawa, Naoki
Goto, Taichi
Sekiguchi, Koji
Granovsky, Alexander B.
Takagi, Hiroyuki
Nakamura, Yuichi
Inoue, Mitsuteru
Ross, Caroline A
Date Issued
July 2016
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Kanazawa, Naoki et al. “Demonstration of a Robust Magnonic Spin Wave Interferometer.” Scientific Reports 6.1 (2016): n. pag.
Version
Final published version
Abstract
Magnonics is an emerging field dealing with ultralow power consumption logic circuits, in which the flow of spin waves, rather than electric charges, transmits and processes information. Waves, including spin waves, excel at encoding information via their phase using interference. This enables a number of inputs to be processed in one device, which offers the promise of multi-input multi-output logic gates. To realize such an integrated device, it is essential to demonstrate spin wave interferometers using spatially isotropic spin waves with high operational stability. However, spin wave reflection at the waveguide edge has previously limited the stability of interfering waves, precluding the use of isotropic spin waves, i.e., forward volume waves. Here, a spin wave absorber is demonstrated comprising a yttrium iron garnet waveguide partially covered by gold. This device is shown experimentally to be a robust spin wave interferometer using the forward volume mode, with a large ON/OFF isolation value of 13.7 dB even in magnetic fields over 30 Oe.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/srep30268
