Spin dynamics in permalloy nano-ellipses for honeycomb and square lattices

Wonbae Bang; M. T. Kaffash; M. T. Hossain; A. Hoffmann; J. B. Ketterson; M. B. Jungfleisch

doi:10.1063/9.0000307

AIP Advances (Mar 2022)

Spin dynamics in permalloy nano-ellipses for honeycomb and square lattices

Wonbae Bang,
M. T. Kaffash,
M. T. Hossain,
A. Hoffmann,
J. B. Ketterson,
M. B. Jungfleisch

Affiliations

Wonbae Bang: School of Liberal Arts, Korea University of Technology and Education, Cheonan 31253, South Korea
M. T. Kaffash: Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
M. T. Hossain: Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
A. Hoffmann: Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
J. B. Ketterson: Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA
M. B. Jungfleisch: Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA

DOI: https://doi.org/10.1063/9.0000307
Journal volume & issue: Vol. 12, no. 3
pp. 035131 – 035131-5

Abstract

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We report experimental and theoretical studies of spin dynamics in lattice structures of permalloy (Ni80Fe20) nano-ellipses, with four different types of networks including honeycomb and square lattices. The lattices are patterned at the center line of the co-planar wave guide and consist of non-contacting or contacting ellipses. Micromagnetic simulations show excellent agreement with the broadband ferromagnetic resonance (FMR) experimental results. We find the existence of a spin-wave mode localized in the vertex region of the contacting nano-ellipse network. Our finding has important implications when designing an artificial spin ice (ASI) network for functional magnonics.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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