Skyrmion Tubes as Magnonic Waveguides

Abstract

Various latest experiments have proven the theoretical prediction that domain walls in planar magnetic structures can channel spin waves as outstanding magnonic waveguides, establishing a superb platform for building magnonic devices. Recently, three-dimensional nanomagnetism has been boosted up and become a significant branch of magnetism, because three-dimensional magnetic structures expose a lot of emerging physics hidden behind planar ones and will inevitably provide broader room for device engineering. Skyrmions and antiSkyrmions, as natural three-dimensional magnetic configurations, are not considered yet in the context of spin-wave channeling and steering. Here, we show that skyrmion tubes can act as nonplanar magnonic waveguides if excited suitably. An isolated skyrmion tube in a magnetic nanoprism induces spatially separate internal and edge channels of spin waves; the internal channel has a narrower energy gap, compared to the edge channel, and accordingly can transmit signals at lower frequencies. Additionally, we verify that those spin-wave beams along magnetic nanoprism are restricted to the regions of potential wells. Transmission of spin-wave signals in such waveguides results from the coherent propagation of locally driven eigenmodes of skyrmions, i.e., the breathing and rotational modes. Finally, we find that spin waves along the internal channels are less susceptible to magnetic field than those along the edge channels. Our work will open a new arena for spin-wave manipulation and help bridge skyrmionics and magnonics.

arXiv comment36 pages, 55 references, 1 graphical abstract, 7 figures, 3 supplemental figures

References in corpus (24)

• Skyrmion Lattice in a Chiral Magnet
• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• The building blocks of magnonics
• Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
• Discovery of Magnetic Antiskyrmions Beyond Room Temperature in Tetragonal Heusler Materials
• Vowel recognition with four coupled spin-torque nano-oscillators
• A new class of chiral materials hosting magnetic skyrmions beyond room temperature
• Spin-Wave Modes and Their Intense Excitation Effects in Skyrmion Crystals
• Heusler, Weyl, and Berry
• Experimental observation of magnetic bobbers for a new concept of magnetic solid-state memory
• Antiskyrmions stabilized at interfaces by anisotropic Dzyaloshinskii-Moriya interaction
• Néel-type skyrmion lattice in tetragonal polar magnet VOSe${}_2$O${}_5$
• A spin wave diode
• Chiral surface twists and skyrmion stability in nanolayers of cubic helimagnets
• Propagating spin excitations along skyrmion strings
• Nonreciprocal spin-wave channeling along textures driven by the Dzyaloshinskii-Moriya interaction
• Pattern Recognition with Magnonic Holographic Memory Device
• Spin-wave spectroscopy on Dzyaloshinskii-Moriya interaction in room-temperature chiral magnets hosting skyrmions
• Homogeneous and heterogeneous nucleation of skyrmions in thin layers of cubic helimagnets
• Micromagnetic simulations of the magnetization precession induced by a spin polarized current in a point contact geometry
• Proposal for a micromagnetic standard problem for materials with Dzyaloshinskii-Moriya interaction
• Kelvin modes of a skyrmion line in chiral magnets and the associated magnon transport
• Brillouin light scattering study of Co${}_2$Cr${}_{0.6}$Fe${}_{0.4}$Al and Co${}_2$FeAl Heusler compounds
• Paving Spin-Wave Fibers in Magnonic Nanocircuits Using Spin-Orbit Torque

Cited by in corpus (15)

• Real-space imaging of confined magnetic skyrmion tubes
• Magnetic skyrmion braids
• Coupled skyrmion breathing modes in synthetic ferri- and antiferromagnets
• Dynamic Excitations of Chiral Magnetic Textures
• Quantum Damping of Skyrmion Crystal Eigenmodes due to Spontaneous Quasiparticle Decay
• Dynamical Switching of Magnetic Topology in Microwave-Driven Itinerant Magnet
• Kelvin modes of a skyrmion line in chiral magnets and the associated magnon transport
• Solitary wave excitations of skyrmion strings in chiral magnets
• Bifurcation of a Topological Skyrmion String
• Anisotropic skyrmion and multi-$q$ spin dynamics in centrosymmetric Gd${}_2$PdSi${}_3$
• Thermal Stability of Skyrmion Tubes in Nanostructured Cuboids
• Nonlinear dynamics of skyrmion strings
• Optically excited spin dynamics of thermally metastable skyrmions in Fe${}_{0.75}$Co${}_{0.25}$Si
• Skyrmion Tubes in achiral nematic liquid crystals
• Static and Dynamics of Twisted Skyrmion Tubes in Frustrated Magnets