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Analytical model of the deformation-induced inertial dynamics of a magnetic vortex

Abstract : We present an analytical model to account for the deformation-induced inertial dynamics of a magnetic vortex. The model is based on a deformation of the vortex core profile based on the Döring kinetic field, whereby the deformation amplitudes are promoted to dynamical variables in a collective-coordinate approach that provides a natural extension to the Thiele model. This extended model describes complex transients due to inertial effects and the variation of the effective mass with velocity. The model also provides a quantitative description of the inertial dynamics leading up to vortex core reversal, which is analogous to the Walker transition in domain wall dynamics. Our work paves the way for a standard prescription for describing the inertial effects of topological magnetic solitons.
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https://hal.archives-ouvertes.fr/hal-03251710
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Submitted on : Monday, November 29, 2021 - 12:05:10 PM
Last modification on : Sunday, June 26, 2022 - 3:21:57 AM

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Myoung-Woo Yoo, Francesca Mineo, Joo-Von Kim. Analytical model of the deformation-induced inertial dynamics of a magnetic vortex. Journal of Applied Physics, American Institute of Physics, 2021, 129 (5), pp.053903. ⟨10.1063/5.0039535⟩. ⟨hal-03251710⟩

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