The emergence of kπ skyrmions and their spin wave modes in a ferromagnetic disk

H. Vigo-Cotrina; D. L. Monteiro; J. P.V. Urruchua; A. P. Guimarães

doi:10.1016/j.jmmm.2022.169665

The emergence of kπ skyrmions and their spin wave modes in a ferromagnetic disk

H. Vigo-Cotrina, D. L. Monteiro, J. P.V. Urruchua, A. P. Guimarães

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

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Using micromagnetic simulations, we show that varying the perpendicular anisotropy constant K_z and the Dzyaloshinskii–Moriya exchange constant D_int one can stabilize kπ skyrmions (k =1, 2, … 5) in a ferromagnetic nanodisk. We have studied their spin wave modes, and obtained the spatial profile of the radial and azimuthal modes, for different values of D_int. Hysteresis curves and the variation of the skyrmion topological charges were obtained as a function of the value of a planar applied magnetic field. The curves show how the application of the field induces the conversion between different kπ skyrmions.

Idioma original	Inglés
Número de artículo	169665
Publicación	Journal of Magnetism and Magnetic Materials
Volumen	560
DOI	https://doi.org/10.1016/j.jmmm.2022.169665
Estado	Publicada - 15 oct. 2022
Publicado de forma externa	Sí

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title = "The emergence of kπ skyrmions and their spin wave modes in a ferromagnetic disk",

abstract = "Using micromagnetic simulations, we show that varying the perpendicular anisotropy constant Kz and the Dzyaloshinskii–Moriya exchange constant Dint one can stabilize kπ skyrmions (k =1, 2, … 5) in a ferromagnetic nanodisk. We have studied their spin wave modes, and obtained the spatial profile of the radial and azimuthal modes, for different values of Dint. Hysteresis curves and the variation of the skyrmion topological charges were obtained as a function of the value of a planar applied magnetic field. The curves show how the application of the field induces the conversion between different kπ skyrmions.",

keywords = "Hysteresis, Micromagnetic simulation, Skyrmion, Skyrmionium, Spin waves, Target skyrmion",

author = "H. Vigo-Cotrina and Monteiro, {D. L.} and Urruchua, {J. P.V.} and Guimar{\~a}es, {A. P.}",

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T1 - The emergence of kπ skyrmions and their spin wave modes in a ferromagnetic disk

AU - Vigo-Cotrina, H.

AU - Monteiro, D. L.

AU - Urruchua, J. P.V.

AU - Guimarães, A. P.

PY - 2022/10/15

Y1 - 2022/10/15

N2 - Using micromagnetic simulations, we show that varying the perpendicular anisotropy constant Kz and the Dzyaloshinskii–Moriya exchange constant Dint one can stabilize kπ skyrmions (k =1, 2, … 5) in a ferromagnetic nanodisk. We have studied their spin wave modes, and obtained the spatial profile of the radial and azimuthal modes, for different values of Dint. Hysteresis curves and the variation of the skyrmion topological charges were obtained as a function of the value of a planar applied magnetic field. The curves show how the application of the field induces the conversion between different kπ skyrmions.

AB - Using micromagnetic simulations, we show that varying the perpendicular anisotropy constant Kz and the Dzyaloshinskii–Moriya exchange constant Dint one can stabilize kπ skyrmions (k =1, 2, … 5) in a ferromagnetic nanodisk. We have studied their spin wave modes, and obtained the spatial profile of the radial and azimuthal modes, for different values of Dint. Hysteresis curves and the variation of the skyrmion topological charges were obtained as a function of the value of a planar applied magnetic field. The curves show how the application of the field induces the conversion between different kπ skyrmions.

KW - Hysteresis

KW - Micromagnetic simulation

KW - Skyrmion

KW - Skyrmionium

KW - Spin waves

KW - Target skyrmion

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DO - 10.1016/j.jmmm.2022.169665

M3 - Artículo

AN - SCOPUS:85133293277

SN - 0304-8853

VL - 560

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

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The emergence of kπ skyrmions and their spin wave modes in a ferromagnetic disk

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