Photonic orbital angular momentum transfer and magnetic skyrmion rotation
arXiv:1704.06926 · doi:10.1364/OE.26.008778
Abstract
Magnetic skyrmions are chiral quasiparticles that show promise for future spintronic applications such as skyrmion racetrack memories and logic devices because of their topological stability, small size (typically nm), and ultralow threshold force to drive their motion. On the other hand, the ability of light to carry and deliver orbital angular momentum (OAM) in the form of optical vortices has attracted a lot of interest. In this work, we predict a photonic OAM transfer effect, by studying the dynamics of magnetic skyrmions subject to Laguerre-Gaussian optical vortices, which manifests a rotational motion of the skyrmionic quasiparticle around the beam axis. The topological charge of the optical vortex determines both the magnitude and the handedness of the rotation velocity of skyrmions. In our proposal, the twisted light beam acts as an optical tweezer to enable us displacing skyrmions over large-scale defects in magnetic films to avoid being captured.
11 pages, 7 figures, accepted by Optics Express
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- Topological insulators and semimetals in classical magnetic systems
- Twisted magnon as a magnetic tweezer
- Twisted Magnon Frequency Comb and Penrose Superradiance
- Antiferromagnetism emerging in a ferromagnet with gain
- Higher-order topological solitonic insulators
- Difference between angular momentum and pseudoangular momentum
- Wiggling skyrmion propagation under parametric pumping
- Edge states in a two-dimensional honeycomb lattice of massive magnetic skyrmions
- Current-induced skyrmion motion on magnetic nanotubes
- Light-controlled skyrmions and torons as reconfigurable particles
- Second-order topological insulator in breathing square lattice of magnetic vortices
- Twisted skyrmion at domain boundaries and the method of image
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- Optically enriched and guided dynamics of active skyrmions
- Imaging the ultrafast coherent control of a skyrmion crystal
- Fundamental Theory of Current-Induced Motion of Magnetic Skyrmions
- Commensuration Effects on Skyrmion Hall Angle and Drag for Manipulation of Skyrmions on Two-Dimensional Periodic Substrates
- Photoinduced topological spin texture in a metallic ferromagnet
- Optical vortices in nanophotonics
- Realizing Corner States in Artificial Crystals Based on Topological Spin Textures
- Skyrmion Generation through the Chirality Interplay of Light and Magnetism
- Optical polarization skyrmionic fields in free space
- Photocontrol of spin scalar chirality in centrosymmetric itinerant magnets
- Photoinduced 120-degree spin order in the Kondo-lattice model on a triangular lattice
- Dipolar-drift and collective instabilities of skyrmions in crossed nonuniform electric and magnetic fields in a chiral magnetic insulator
- Observation of magnetic helicoidal dichroism with extreme ultraviolet light vortices
- Hydrodynamic model of skyrmions and vorticities in the spin-1 Bose-Einstein condensate in ferromagnetic phase at finite temperatures