Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film

Journal Article · Mon Sep 10 00:00:00 EDT 2018 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/TMAG.2018.2864917· OSTI ID:1499293

Lim, Jinho  ^[1]; Bang, Wonbae ^[2]; Trossman, Jonathan ^[1]; Kreisel, Andreas  ^[3]; Jungfleisch, Matthias Benjamin ^[4]; Hoffmann, Axel  ^[4]; Tsai, C. C. ^[5]; Ketterson, John B.  ^[1]

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1. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
2. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
3. Univ. Leipzig, Leipzig (Germany). Inst. für Theoretische Physik
4. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
5. Chang Jung Christian Univ., Tainan (Taiwan). Dept. of Engineering and Management of Advanced Technology

We demonstrate that micrometer scale spin waves can be excited in a thin film of the ferrimagnetic material Yttrium Iron Garnet (YIG) using patterned, multi-element, antennas. The magnitude of dynamic magnetic field generated by such antennas decays exponentially along the thickness direction and this leads to an enhanced coupling to modes having a surface-like character as opposed to a more sinusoidal bulk-like character. We have used this property to identify spin waves having a mixed bulk/surface character.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
• Grant/Contract Number: AC02-06CH11357; SC0014424
• OSTI ID: 1499293
• Journal Information: IEEE Transactions on Magnetics, Vol. 55, Issue 2; ISSN 0018-9464
• Publisher: Institute of Electrical and Electronics Engineers. Magnetics Group
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Dipole-exchange spin wave
hybridization
multi-element antenna
surface mode