Spin wave propagation over long distances in confined ferromagnetic strip lines exhibiting magnetoelasticity opens up promising perspectives for device applications. Domain walls as natural spin wave channels increase the spin wave propagation distance. We calculate the magnetic and elastic modes through micromagnetic simulations and the dispersion relation of strip lines containing a Néel wall. We show that at the crossing points in the dispersion relation, two behaviors are observed: an anticrossing gap when a strong coupling is present or a gapless point when the magnetoelastic feedback cycle is not fulfilled. For the Néel wall-confined magnetic mode, the magnetic and elastic waves oscillate independently forming a gapless crossing point. For the domain modes, both behaviors are found. We discuss the gap existence based on the symmetry of the eigenmodes.
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Magnetoelastic modes in Néel domain walls
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14 December 2022
Research Article|
December 12 2022
Magnetoelastic modes in Néel domain walls
Special Collection:
Recent Advances in Magnonics
D. Froes
;
D. Froes
(Writing – original draft, Writing – review & editing)
1
Centro Brasileiro de Pesquisas Físicas
, Rua Dr. Xavier Sigaud, 150, Rio de Janeiro 22290-180, RJ, Brazil
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M. Arana
;
M. Arana
(Conceptualization, Project administration, Writing – original draft, Writing – review & editing)
2
Instituto de Física, Universidade Federal do Rio de Janeiro
, CP 68528, Rio de Janeiro 21941-972, RJ, Brazil
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J. P. Sinnecker
;
J. P. Sinnecker
(Conceptualization, Project administration, Writing – original draft, Writing – review & editing)
1
Centro Brasileiro de Pesquisas Físicas
, Rua Dr. Xavier Sigaud, 150, Rio de Janeiro 22290-180, RJ, Brazil
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L. C. Sampaio
L. C. Sampaio
a)
(Conceptualization, Project administration, Writing – original draft, Writing – review & editing)
1
Centro Brasileiro de Pesquisas Físicas
, Rua Dr. Xavier Sigaud, 150, Rio de Janeiro 22290-180, RJ, Brazil
a)Author to whom correspondence should be addressed: sampaio@cbpf.br
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a)Author to whom correspondence should be addressed: sampaio@cbpf.br
Note: This paper is part of the Special Topic on Recent Advances in Magnonics.
J. Appl. Phys. 132, 223908 (2022)
Article history
Received:
September 30 2022
Accepted:
November 24 2022
Citation
D. Froes, M. Arana, J. P. Sinnecker, L. C. Sampaio; Magnetoelastic modes in Néel domain walls. J. Appl. Phys. 14 December 2022; 132 (22): 223908. https://doi.org/10.1063/5.0128775
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