Dynamic coupling and spin-wave dispersions in a magnetic hybrid system made of an artificial spin-ice structure and an extended NiFe underlayer
Abstract
We present a combined experimental and numerical study of the spin-wave dispersion in a NiFe artificial spin-ice (ASI) system consisting of an array of stadium-shaped nanoislands deposited on the top of a continuous NiFe film with non-magnetic spacer layers of varying thickness. The spin-wave dispersion, measured by wavevector resolved Brillouin light scattering spectroscopy in the Damon–Eshbach configuration, consists of a rich number of modes, with either stationary or propagating character. We find that the lowest frequency mode displays a bandwidth of ~0.5 GHz, which is independent of the presence of the film underneath. On the contrary, the Brillouin light scattering intensity of some of the detected modes strongly depends on the presence of the extended thin-film underlayer. Micromagnetic simulations unveil the details of the dynamic coupling between the ASI lattice and film underlayer. Interestingly, the ASI lattice facilitates dynamics of the film either specific wavelengths or intensity modulation peculiar to the modes of the ASI elements imprinted in the film. Our results demonstrate that propagating spin waves can be modulated at the nanometer length scale by harnessing the dynamic mode coupling in the vertical, i.e., the out-of-plane direction of suitably designed magnonic structures.
- Authors:
-
[1];
[2];
[2];
[3]
- Univ. of Ferrara (Italy)
- Univ. of Delaware, Newark, DE (United States)
- Istituto Officina dei Materiali del Consiglio Nazionale delle Ricerche (IOM-CNR), Perugia (Italy)
- Publication Date:
- Research Org.:
- Univ. of Delaware, Newark, DE (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Italian Ministry of University and Research; European Union’s Horizon 2020 Research and Innovation Program; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- OSTI Identifier:
- 1907080
- Alternate Identifier(s):
- OSTI ID: 1889779; OSTI ID: 1983626
- Grant/Contract Number:
- SC0020308; 101007417; 2020LWPKH7
- Resource Type:
- Accepted Manuscript
- Journal Name:
- APL Materials
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 9; Journal ID: ISSN 2166-532X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Thin films; Brillouin spectroscopy; Electron-beam lithography; Magnons; Magnetic resonance; Magnetism; Spin wave spectroscopy; Microwave spectroscopy; Metamaterials; Magnetic ordering; Science and Technology of 3D Magnetic Nanostructures
Citation Formats
Negrello, R., Montoncello, F., Kaffash, M. T., Jungfleisch, M. B., and Gubbiotti, G. Dynamic coupling and spin-wave dispersions in a magnetic hybrid system made of an artificial spin-ice structure and an extended NiFe underlayer. United States: N. p., 2022.
Web. doi:10.1063/5.0102571.
Negrello, R., Montoncello, F., Kaffash, M. T., Jungfleisch, M. B., & Gubbiotti, G. Dynamic coupling and spin-wave dispersions in a magnetic hybrid system made of an artificial spin-ice structure and an extended NiFe underlayer. United States. https://doi.org/10.1063/5.0102571
Negrello, R., Montoncello, F., Kaffash, M. T., Jungfleisch, M. B., and Gubbiotti, G. Tue .
"Dynamic coupling and spin-wave dispersions in a magnetic hybrid system made of an artificial spin-ice structure and an extended NiFe underlayer". United States. https://doi.org/10.1063/5.0102571. https://www.osti.gov/servlets/purl/1907080.
@article{osti_1907080,
title = {Dynamic coupling and spin-wave dispersions in a magnetic hybrid system made of an artificial spin-ice structure and an extended NiFe underlayer},
author = {Negrello, R. and Montoncello, F. and Kaffash, M. T. and Jungfleisch, M. B. and Gubbiotti, G.},
abstractNote = {We present a combined experimental and numerical study of the spin-wave dispersion in a NiFe artificial spin-ice (ASI) system consisting of an array of stadium-shaped nanoislands deposited on the top of a continuous NiFe film with non-magnetic spacer layers of varying thickness. The spin-wave dispersion, measured by wavevector resolved Brillouin light scattering spectroscopy in the Damon–Eshbach configuration, consists of a rich number of modes, with either stationary or propagating character. We find that the lowest frequency mode displays a bandwidth of ~0.5 GHz, which is independent of the presence of the film underneath. On the contrary, the Brillouin light scattering intensity of some of the detected modes strongly depends on the presence of the extended thin-film underlayer. Micromagnetic simulations unveil the details of the dynamic coupling between the ASI lattice and film underlayer. Interestingly, the ASI lattice facilitates dynamics of the film either specific wavelengths or intensity modulation peculiar to the modes of the ASI elements imprinted in the film. Our results demonstrate that propagating spin waves can be modulated at the nanometer length scale by harnessing the dynamic mode coupling in the vertical, i.e., the out-of-plane direction of suitably designed magnonic structures.},
doi = {10.1063/5.0102571},
journal = {APL Materials},
number = 9,
volume = 10,
place = {United States},
year = {Tue Sep 27 00:00:00 EDT 2022},
month = {Tue Sep 27 00:00:00 EDT 2022}
}
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