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

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	169665
Journal	Journal of Magnetism and Magnetic Materials
Volume	560
DOIs	https://doi.org/10.1016/j.jmmm.2022.169665
State	Published - 15 Oct 2022
Externally published	Yes

Keywords

Hysteresis
Micromagnetic simulation
Skyrmion
Skyrmionium
Spin waves
Target skyrmion

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10.1016/j.jmmm.2022.169665

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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.",

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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

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VL - 560

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

M1 - 169665

ER -

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

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Keywords

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