Twisted magnon as a magnetic tweezer
arXiv:1910.11528 · doi:10.1103/PhysRevLett.124.217204
Abstract
Wave fields with spiral phase dislocations carrying orbital angular momentum (OAM) have been realized in many branches of physics, such as for photons, sound waves, electron beams, and neutrons. However, the OAM states of magnons (spin waves)the building block of modern magnetismand particularly their implications have yet to be addressed. Here, we theoretically investigate the twisted spin-wave generation and propagation in magnetic nanocylinders. The OAM nature of magnons is uncovered by showing that the spin-wave eigenmode is also the eigenstate of the OAM operator in the confined geometry. Inspired by optical tweezers, we predict an exotic "magnetic tweezer" effect by showing skyrmion gyrations under twisted magnons in exchange coupled nanocylindernanodisk heterostructure, as a practical demonstration of magnonic OAM to manipulate topological spin defects. Our study paves the way for the emerging magnetic manipulations by harnessing the OAM degree of freedom of magnons.
arXiv comment6 pages, 4 figures, to appear in PRL
References in corpus (31)
- The design and verification of Mumax3
- Entanglement of Orbital Angular Momentum States of Photons
- Free-space quantum key distribution by rotation-invariant twisted photons
- Semiclassical Dynamics of Electron Wave Packet States with Phase Vortices
- Experimental observation of magnetic bobbers for a new concept of magnetic solid-state memory
- Twisting of light around rotating black holes
- All-magnonic spin-transfer torque and domain wall propagation
- Quantum entanglement of angular momentum states with quantum numbers up to 10010
- New type of stable particle like states in chiral magnets (Chiral bobbers)
- Steady Bell state generation via magnon-photon coupling
- A skyrmion-based spin-torque nano-oscillator
- Ultrafast generation of skyrmionic defects with vortex beams: printing laser profiles on magnets
- Binding a Hopfion in Chiral Magnet Nanodisk
- Hopfions in chiral magnets
- Current-Driven Dynamics of Magnetic Hopfions
- Static Hopf Solitons and Knotted Emergent Fields in Solid-State Noncentrosymmetric Magnetic Nanostructures
- Driven skyrmions and dynamical transitions in chiral magnets
- Magnon-Driven Domain-Wall Motion with the Dzyaloshinskii-Moriya Interaction
- Orbital angular momentum transfer to stably trapped elastic particles in acoustical vortex beams
- Realization of electron vortices with large orbital angular momentum using miniature holograms fabricated by electron beam lithography
- Selection rules for cavity-enhanced Brillouin light scattering from magnetostatic modes
- Encoding orbital angular momentum of light in magnets
- Photonic orbital angular momentum transfer and magnetic skyrmion rotation
- Hunting the Gluon Orbital Angular Momentum at the Electron-Ion Collider
- Antiferromagnetism emerging in a ferromagnet with gain
- Angular and Linear Momentum of Excited Ferromagnets
- Higher-order topological solitonic insulators
- Manipulating twisted electron beams
- Twisted skyrmion at domain boundaries and the method of image
- Twisting and tweezing the spin wave: on vortices, skyrmions, helical waves, and the magnonic spiral phase plate
- Thermodynamic Entanglement of Magnonic Condensates
Cited by in corpus (19)
- Optical skyrmions and other topological quasiparticles of light
- Topological insulators and semimetals in classical magnetic systems
- Tutorial: Nonlinear magnonics
- Twisted Magnon Frequency Comb and Penrose Superradiance
- Difference between angular momentum and pseudoangular momentum
- Magnon driven skyrmion dynamics in antiferromagnets: The effect of magnon polarization
- Spin-wave focusing induced skyrmion generation
- Optical-controlled ultrafast dynamics of skyrmion in antiferromagnets
- Unconventional magnon excitation by off-resonant microwaves
- Skyrmion lattice hosted in synthetic antiferromagnets and helix modes
- Generation of twisted magnons via spin-to-orbital angular momentum conversion
- Transverse spin angular momentum of space-time surface plasmon polariton wave packet
- Magnetic skyrmion generation by reflective spin-wave focusing
- Magnon-driven dynamics of frustrated skyrmion in synthetic antiferromagnets: Effect of skyrmion precession
- Anatomy of spin wave driven magnetic texture motion via magnonic torques
- Exact Results for the Orbital Angular Momentum of Magnons on Honeycomb Lattices
- Orbital angular momentum and current-induced motion of a Skyrmion-textured domain wall in a ferromagnetic nanotube
- Eigenmodes of twisted spin-waves in a thick ferromagnetic nanodisk
- Field Theory of Linear Spin-Waves in Finite Textured Ferromagnets