Observation of domain wall bimerons in chiral magnets

Abstract

Topological defects embedded in or combined with domain walls have been proposed in various systems, some of which are referred to as domain wall skyrmions or domain wall bimerons. However, the experimental observation of such topological defects remains an ongoing challenge. Here, using Lorentz transmission electron microscopy, we report the experimental discovery of domain wall bimerons in chiral magnet Co-Zn-Mn(110) thin films. By applying a magnetic field, multidomain structures develop, and simultaneously, chained and isolated bimerons arise as the localized state between the domains with the opposite in-plane components of net magnetization. The multidomain formation is attributed to magnetic anisotropy and dipolar interaction, and domain wall bimerons are stabilized by the Dzyaloshinskii-Moriya interaction. In addition, micromagnetic simulations show that domain wall bimerons appear for a wide range of conditions in chiral magnets with cubic magnetic anisotropy. Our results promote further study in various fields of physics.

arXiv comment30 pages, 10 figures (including Supplementary Materials)

References in corpus (31)

• Skyrmion Lattice in a Chiral Magnet
• The design and verification of Mumax3
• Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction
• Discovery of Magnetic Antiskyrmions Beyond Room Temperature in Tetragonal Heusler Materials
• A new class of chiral materials hosting magnetic skyrmions beyond room temperature
• Skyrmion fractionalization and merons in chiral magnets with easy-plane anisotropy
• Magnetic Skyrmion State in Janus Monolayers of Chromium Trihalides Cr(I,X)3
• Magnetic bimerons as skyrmion analogues in in-plane magnets
• Observation of Topologically Stable 2D Skyrmions in an Antiferromagnetic Spinor Bose-Einstein Condensate
• Observation of two independent skyrmion phases in a chiral magnetic material
• Quantized chiral edge conduction on reconfigurable domain walls of a magnetic topological insulator
• New magnetic phase of the chiral skyrmion material Cu2OSeO3
• Magnetic domain wall Skyrmions
• Asymmetric isolated skyrmions in polar magnets with easy-plane anisotropy
• Skyrmions from Instantons inside Domain Walls
• Temperature and magnetic field dependence of the internal and lattice structures of skyrmions by off-axis electron holography
• Domain wall Skyrmions
• Jewels on a wall ring
• Creating vortons and three-dimensional skyrmions from domain wall annihilation with stretched vortices in Bose-Einstein condensates
• Topological defects and Goldstone excitations in domain walls between ferromagnetic quantum Hall effect liquids
• Confinement of Half-quantized Vortices in Coherently Coupled Bose-Einstein Condensates: Simulating Quark Confinement in QCD
• Wall-vortex composite solitons in two-component Bose-Einstein condensates
• Vortex trimer in three-component Bose-Einstein condensates
• Element-specific soft X-ray spectroscopy, scattering and imaging studies of skyrmion-hosting compound Co${}_8$Zn${}_8$Mn${}_4$
• Properties of skyrmions and multi-quanta vortices in chiral $p$-wave superconductors
• Mechanisms of skyrmion and skyrmion crystal formation from the conical phase
• Spins, charges and currents at Domain Walls in a Quantum Hall Ising Ferromagnet
• Strings and skyrmions on domain walls
• Woven Nematic Defects, Skyrmions and the Abelian Sandpile Model
• Vital role of anisotropy in cubic chiral skyrmion hosts
• Pump-probe nuclear spin relaxation study of the quantum Hall ferromagnet at filling factor nu = 2

Cited by in corpus (28)

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• Relations among topological solitons
• Domain Wall Skyrmions in Chiral Magnets
• Phase diagram of QCD matter with magnetic field: domain-wall Skyrmion chain in chiral soliton lattice
• Wigner solids of domain wall skyrmions
• Chiral Magnets from String Theory
• Tuning of topological properties in the strongly correlated antiferromagnet Mn${}_3$Sn via Fe doping
• Nonreciprocal Phonon Propagation in a Metallic Chiral Magnet
• Nonreciprocal dynamics of ferrimagnetic bimerons
• Bimerons create bimerons: proliferation and aggregation induced by currents and magnetic fields
• Spin wave stiffness and damping in a frustrated chiral helimagnet Co${}_8$Zn${}_8$Mn${}_4$ as measured by small-angle neutron scattering
• Spin Statistics and Surgeries of Topological Solitons in QCD Matter in Magnetic Field
• Controllable inter-skyrmion attractions and resulting skyrmion-lattice structures in two-dimensional chiral magnets with in-plane anisotropy
• Topological invariants of vortices, merons, skyrmions, and their combinations in continuous and discrete systems
• Magnetic Bimeron Traveling on the Domain Wall
• Skyrmion crystal phase on a magnetic domain wall in chiral magnets
• Background fields and self-dual Skyrmions
• Topological meron-antimeron domain walls and skyrmions in a low-symmetry system
• Topological melting of the metastable skyrmion lattice in the chiral magnet Co${}_9$Zn${}_9$Mn${}_2$
• Magnonics along the wall in Bimeron Chain Domain Walls
• Tuning of Electrical, Magnetic, and Topological Properties of Magnetic Weyl Semimetal Mn${}_{3+x}$Ge by Fe doping
• Domain Wall Networks as Skyrmion Crystals in Chiral Magnets
• Creation of domain-wall Skyrmions in chiral magnets
• Domain wall skyrmion-based magnonic crystal
• Magnetic D-brane solitons: skyrmion strings ending on a Néel wall in chiral magnets
• Spin-reorientation driven topological Hall effect in Fe4GeTe2
• Fermionic domain-wall Skyrmions of QCD in a magnetic field
• Creation of domain-wall skyrmions in chiral magnets with Landau-Lifshitz-Gilbert dynamics and demagnetization