Driving magnetic skyrmions with microwave fields

Abstract

We show theoretically by numerically solving the Landau-Lifshitz-Gilbert equation with a classical spin model on a two-dimensional system that both magnetic skyrmions and skyrmion lattices can be moved with microwave magnetic fields. The mechanism is enabled by breaking the axial symmetry of the skyrmion, for example through application of a static in-plane external field. The net velocity of the skyrmion depends on the frequency and amplitude of the microwave fields as well as the strength of the in-plane field. The maximum velocity is found where the frequency of the microwave coincides with the resonance frequency of the breathing mode of the skyrmions.

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• Fidimag -- a finite difference atomistic and micromagnetic simulation package
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• Shapiro Steps and Nonlinear Skyrmion Hall Angles For dc and ac Driven Skyrmions on a Two Dimensional Periodic Substrate
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• Directed Motion of Liquid Crystal Skyrmions With Oscillating Fields
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• Skyrmions and antiskyrmions in monoaxial chiral magnets
• Steering skyrmions with microwave and THz electric pulses
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• Ferrimagnetic Skyrmions in a Tetragonal Mn1.9Co0.1Sb Single Crystal at Room Temperature
• Hybrid quantum surface acoustic wave with skyrmion qubit for quantum information processing
• Archimedean Screw in Driven Chiral Magnets