Current-Driven Dynamics of Magnetic Hopfions
arXiv:1905.09154 · doi:10.1103/PhysRevLett.123.147203
Abstract
Topological magnetic textures have attracted considerable interest since they exhibit new properties and might be useful in information technology. Magnetic hopfions are three-dimensional (3D) spatial variations in the magnetization with a non-trivial Hopf index. We find that in ferromagnetic materials, two types of hopfions, Bloch-type and Néel-type hopfions, can be excited as metastable states in the presence of bulk and interfacial Dzyaloshinskii-Moriya interactions, respectively. We further investigate how hopfions can be driven by currents via spin-transfer torques (STTs) and spin-Hall torques (SHTs). Distinct from 2D ferromagnetic skyrmions, hopfions have a vanishing gyrovector. Consequently, there are no undesirable Hall effects. Néel-type hopfions move along the current direction via both STT and SHT, while Bloch-type hopfions can be moved either transverse to the current direction by SHT or parallel to the current direction by STT. Our findings open the door to utilizing hopfions as information carriers.
arXiv comment5 pages, 3 figures in main text + 8 pages, 4 figures in SM
References in corpus (40)
- The design and verification of Mumax3
- Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Blowing Magnetic Skyrmion Bubbles
- Roles of non-equilibrium conduction electrons on magnetization dynamics of ferromagnets
- Magnetometry with nitrogen-vacancy defects in diamond
- Direct Observation of the Skyrmion Hall Effect
- Skyrmion Hall Effect Revealed by Direct Time-Resolved X-Ray Microscopy
- Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
- Knots and Particles
- Dynamics of Skyrmion Crystals in Metallic Thin Films
- Field-Dependent Size and Shape of Single Magnetic Skyrmions
- A theory on skyrmion size and profile
- Partially Dual variables in SU(2) Yang-Mills Theory
- Hidden symmetry and knot solitons in a charged two-condensate Bose system
- Hybrid chiral domain walls and skyrmions in magnetic multilayers
- Control and manipulation of a magnetic skyrmionium in nanostructures
- Direct imaging of a zero-field target skyrmion and its polarity switch in a chiral magnetic nanodisk
- Static solitons with non-zero Hopf number
- Faddeev-Hopf knots: Dynamics of linked un-knots
- Knots in a Spinor Bose-Einstein Condensate
- Binding a Hopfion in Chiral Magnet Nanodisk
- Hopfions in chiral magnets
- Static Hopf Solitons and Knotted Emergent Fields in Solid-State Noncentrosymmetric Magnetic Nanostructures
- Diversity of knot solitons in liquid crystals manifested by linking of preimages in torons and hopfions
- Perpendicular Reading of Single Confined Magnetic Skyrmions
- Dual neutral variables and knot solitons in triplet superconductors
- Domain wall propagation through spin wave emission
- ``Smoke Rings'' in Ferromagnets
- Controlling Chiral Domain Walls in Antiferromagnets Using Spin-Wave Helicity
- Phenomenology of Current-Induced Spin-Orbit Torques
- Temperature dependence of spin polarization in ferromagnetic metals using lateral spin valves
- Ultrafast generation and dynamics of isolated skyrmions in antiferromagnetic insulators
- Current-driven skyrmion expulsion from magnetic nanostrips
- Asymmetric and symmetric exchange in a generalized 2D Rashba ferromagnet
- Theory of the Interfacial Dzyaloshinskii-Moriya Interaction in Rashba Antiferromagnets
- Generation of single skyrmions by picosecond magnetic field pulses
- Divergence-free Interpolation of Vector Fields From Point Values - Exact divB=0 in Numerical Simulations
- Breaking the current density threshold in spin-orbit-torque magnetic random access memory
- Spin-Transfer Torques in Helimagnets
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- Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
- Skyrmion-electronics: Writing, deleting, reading and processing magnetic skyrmions toward spintronic applications
- Statics and Dynamics of Skyrmions Interacting with Pinning: A Review
- Creation and confirmation of Hopfions in magnetic multilayer systems
- Electrical manipulation of skyrmions in a chiral magnet
- Topological Transformation and Free-Space Transport of Photonic Hopfions
- Three-dimensional dynamics of magnetic hopfion driven by spin transfer torque
- Review: Topology of solitons and singular defects in chiral liquid crystals
- Magnetic hopfions in solids
- Hopf solitons in helical and conical backgrounds of chiral magnetic solids
- Twisted magnon as a magnetic tweezer
- Topological Hall signatures of magnetic hopfions
- Field-driven dynamics of magnetic Hopfions
- Dynamic Excitations of Chiral Magnetic Textures
- Homochiral antiferromagnetic merons, antimerons and bimerons realized in synthetic antiferromagnets
- Emergent Magneto-multipoles and Nonlinear Responses of a Magnetic Hopfion
- Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet
- Geometric transformation and three-dimensional hopping of Hopf solitons
- Topological transport of deconfined hedgehogs in magnets
- Multiple-scattering approach for multi-spin chiral magnetic interactions: Application to the one- and two-dimensional Rashba electron gas
- Magnonic Hall Effect and Magnonic Holography of Hopfions
- Mutual conversion between a magnetic Neel hopfion and a Neel toron
- Bifurcation of a Topological Skyrmion String
- Stability of Hopfions in Bulk Magnets with Competing Exchange Interactions
- Stabilizing chiral spin-structures via an alternating Dzyaloshinskii-Moriya interaction
- Hopfion Dynamics in Chiral Magnets
- Current-driven motion of magnetic domain-wall skyrmions
- Detection of Topological Spin Textures via Non-Linear Magnetic Responses
- Emergent magnetic field and vector potential of the toroidal magnetic hopfions
- Electromagnetic Proximity Effect: Superconducting Magnonics and Beyond
- Current-Induced Dynamics of Chiral Magnetic Structures: Creation, Motion, and Applications
- Lifetime, collapse and escape paths for hopfions in bulk magnets with competing exchange interactions
- Light-induced Dzyaloshinskii-Moriya interactions in antiferromagnetic metals
- Stabilization and dynamics of magnetic antivortices in a nanodisk with anisotropic Dzyaloshinskii-Moriya interaction
- Survey of 360 domain walls in magnetic heterostructures: topology, chirality and current-driven dynamics
- Elliptical stability of hopfions in bulk helimagnets
- Photonic Shankar skyrmion
- Emergent Magnetic Field and Nonzero Gyrovector of the Toroidal Magnetic Hopfion
- Topological Spin Textures Enabling Quantum Transmission
- Two types of metastable magnetic hopfions
- Topological transport of vorticity on curved magnetic membranes
- Thickness-Driven Transitions Between Novel Magnetic States in Ferromagnetic Films
- Three-dimensional topological orbital Hall effect caused by magnetic hopfions
- Tunable Ultrafast Dynamics of Antiferromagnetic Vortices in Nanoscale Dots
- Static and Dynamics of Twisted Skyrmion Tubes in Frustrated Magnets
- Propagation, generation, and utilization of topologically trivial magnetic solitons in magnetic nanowires
- Synthetic half-integer magnetic monopole and single-vortex dynamics in spherical Bose-Einstein condensates
- Linked skyrmions in shifted magnetic bilayer
- Construction of Hopfion Crystals