Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session X22: Spin-Orbit Effects at Metal/Insulator Interfaces
8:00 AM–11:00 AM,
Friday, March 9, 2018
LACC
Room: 402A
Sponsoring
Units:
GMAG DMP FIAP
Chair: Can Onur Avci, Massachusetts Institute of Technology-MIT
Abstract ID: BAPS.2018.MAR.X22.5
Abstract: X22.00005 : Measurements of the long-wavelength dispersion of spin waves along the principal directions of an yttrium iron garnet film*
9:12 AM–9:24 AM
Presenter:
Jinho Lim
(Department of Physics and Astronomy, Northwestern Univ)
Authors:
Jinho Lim
(Department of Physics and Astronomy, Northwestern Univ)
Wonbae Bang
(Department of Physics and Astronomy, Northwestern Univ)
Jonathan Trossman
(Department of Physics and Astronomy, Northwestern Univ)
Dovran Amanov
(Department of Physics, The Hong Kong University of Science and Technology)
Matthias Benjamin Jungfleisch
(Materials Science Division, Argonne National Laboratory)
Axel Hoffmann
(Materials Science Division, Argonne National Laboratory)
J Ketterson
(Department of Physics and Astronomy, Northwestern Univ)
The present study focuses on a systematic investigation of the dispersion of spin waves in YIG (yttrium iron garnet, Y3Fe5O12) that are excited using optical-lithographically patterned multi-element “ladder” antennas. A microwave current is passed through the “rungs” of this structure which then produces a spatially periodic microwave field; when coupled to an adjacent ferromagnetic film, this can excite spin waves which results in absorption peaks when the external frequency and magnetic field are such that the rung spacing, d, matches the wavelength, l, of a spin wave mode. In some cases, sub-wavelength peaks, where l = d / p and p is an integer, can be resolved.
References
[1] P. K. Amiri, B. Rejaei, M. Vroubel and Y. Zhuang, Appl. Phys. Lett. 91, 062502 (2007).
[2] J. D. Adam, R. W. Patterson and T. W. Okeeffe, J. Appl. Phys. 49, 1797 (1978).
*Research was supported by the U.S. DOE under grant DE-SC0014424 and DE-AC02-06CH11357.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.X22.5
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