Dynamics of Skyrmion Crystals in Metallic Thin Films

Abstract

We study the collective dynamics of the Skyrmion crystal (SkX) in thin films of ferromagnetic metals resulting from the nontrivial Skyrmion topology. We show that the current-driven motion of the crystal reduces the topological Hall effect and the Skyrmion trajectories bend away from the direction of the electric current (the Skyrmion Hall effect). We find a new dissipation mechanism in non-collinear spin textures that can lead to a much faster spin relaxation than Gilbert damping, calculate the dispersion of phonons in the SkX, and discuss effects of impurity pinning of Skyrmions.

4 pages. Accepted by Phys. Rev. Lett

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• Emergent inductors in non-helical magnets
• Sliding Dynamics of Current-Driven Skyrmion Crystal and Helix in Chiral Magnets
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• Skyrmions and Hall viscosity
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• Shape of a skyrmion
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• Anomalous Feedback and Negative Domain Wall Resistance
• Zero-energy Bound States in Nodal Topological Lattice
• Topological dipoles of quantum skyrmions
• Magnetic D-brane solitons: skyrmion strings ending on a Néel wall in chiral magnets
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• Lagrangian formulation for emergent elastic waves in magnetic emergent crystals
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• Propagation, generation, and utilization of topologically trivial magnetic solitons in magnetic nanowires
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• Skyrmion-deriven topological spin and charge Hall effects in diffusive antiferromagnetic thin films
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• Quantized Topological Charges of Ferroelectric Skyrmions in Two-Dimensional Multiferroic Materials
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• Optically Controlled Skyrmion Number Current
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• Creation of domain-wall skyrmions in chiral magnets with Landau-Lifshitz-Gilbert dynamics and demagnetization
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