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Article Dans Une Revue Journal of Applied Physics Année : 2021

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

Résumé

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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Dates et versions

hal-03251710 , version 1 (29-11-2021)

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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, 2021, 129 (5), pp.053903. ⟨10.1063/5.0039535⟩. ⟨hal-03251710⟩
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