Bulletin of the American Physical Society
2023 Annual Meeting of the APS Mid-Atlantic Section
Friday–Sunday, November 3–5, 2023; University of Delaware, Newark, Delaware
Session D02: Magnetization Dynamics and Spin-Transport Phenomena
11:00 AM–12:36 PM,
Saturday, November 4, 2023
University of Delaware
Room: Gore 104
Chair: Sergei Urazhdin, Emory University
Abstract: D02.00005 : Vertical dynamic spin-wave mode coupling in a hybrid artificial spin-ice film underlayer system*
12:12 PM–12:24 PM
Presenter:
Rawnak Sultana
(University of Delaware)
Authors:
Rawnak Sultana
(University of Delaware)
Mojtoba Taghipour Kaffash
(University of Delaware)
Yi Ji
(University of Delaware)
Gianluca Gubbiotti
(Istituto officina dei Materiali- CNR- Perugia)
M. Benjamin Jungfleisch
(University of Delaware)
Here, we couple a square ASI structure made of CoFeB stadium-shaped nanoelements to a continuous NiFe film underlayer to understand how the presence of the ASI affects the spin-wave properties in the film underlayer. We conduct Brillouin light scattering spectroscopy on thermal spin waves as a function of the magnetic field where the field is applied along the symmetry direction of the ASI network. Investigating these field-dependent dynamics resulting from the interplay between the layers and the emerging interlayer hybridization unveils that the ASI lattice facilitates vertical dynamics in the film layer. In particular, our results show that nanometric control of propagating spin waves can be achieved by harnessing dynamic mode coupling in the vertical, i.e., the out-of-plane direction of carefully engineered magnonic structures2,3.
References:
[1] Gliga, Iacocca, and Heinonen, APL Materials, 8(4), (2020).
[2] Montoncello, Kaffash, Carfagno, Doty, Gubbiotti, and Jungfleisch, J. Appl. Phys. , 133(8), (2023).
[3] Negrello, Montoncello, Kaffash, Jungfleisch, and Gubbiotti, APL Materials 10, 091115 (2022).
*This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC-0024346.
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