Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature

Abstract

Facing the ever-growing demand for data storage will most probably require a new paradigm. Nanoscale magnetic skyrmions are anticipated to solve this issue as they are arguably the smallest spin textures in magnetic thin films in nature. We designed cobalt-based multilayered thin films where the cobalt layer is sandwiched between two heavy metals providing additive interfacial Dzyaloshinskii-Moriya interactions, which reach a value close to 2 mJ m-2 in the case of the Ir|Co|Pt asymmetric multilayers. Using a magnetization-sensitive scanning x-ray transmission microscopy technique, we imaged small magnetic domains at very low field in these multilayers. The study of their behavior in perpendicular magnetic field allows us to conclude that they are actually magnetic skyrmions stabilized by the large Dzyaloshinskii-Moriya interaction. This discovery of stable sub-100 nm individual skyrmions at room temperature in a technologically relevant material opens the way for device applications in a near future.

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Cited by in corpus (444)

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• Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures
• Spin wave power flow and caustics in ultrathin ferromagnets with the Dzyaloshinskii-Moriya interaction
• The skyrmion-bubble transition in a ferromagnetic thin film
• Unraveling the role of dipolar versus Dzyaloshinskii-Moriya interaction in stabilizing compact magnetic skyrmions
• Dynamical defects in rotating magnetic skyrmion lattices
• Extension of the standard Heisenberg Hamiltonian to multispin exchange interactions
• A transmission electron microscope study of Néel skyrmion magnetic textures in multilayer thin film systems with large interfacial chiral interaction
• Microwave resonances of magnetic skyrmions in thin film multilayers
• Topological spin Hall effect in antiferromagnetic skyrmions
• Encoding orbital angular momentum of light in magnets
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• Chiral skyrmions in an anisotropy gradient driven by spin-Hall effect
• Quantum Dynamics of Skyrmions in Chiral Magnets
• Magnetic skyrmions in confined geometries : effect of the magnetic field and the disorder
• General theory of topological Hall effect in systems with chiral spin textures
• Thermally assisted skyrmions creation in Pt/Co/Ta multilayer films
• Strain-Driven Zero-Field Near-10 nm Skyrmions in Two-Dimensional van der Waals Heterostructures
• Competition of Dzyaloshinskii-Moriya and higher-order exchange interactions in Rh/Fe atomic bilayers on Ir(111)
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• Domain walls and Dzyaloshinskii-Moriya interaction in epitaxial Co/Ir(111) and Pt/Co/Ir(111)
• Tunable Snell's law for spin waves in heterochiral magnetic films
• Interfacial Dzyaloshinskii-Moriya interaction in epitaxial W/Co/Pt multilayers
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• Oriented Three-Dimensional Magnetic Biskyrmion in MnNiGa Bulk Crystals
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• Boundary-Driven Twist States in Systems with Broken Spatial Inversion Symmetry
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• Material systems for FM-/AFM-coupled skyrmions in Co/Pt-based multilayers
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• First Principles Calculation of Dzyaloshinskii-Moriya Interaction: A Green's function Approach
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• Bifurcation of a Topological Skyrmion String
• Investigation of the interfacial Dzyaloshinskii-Moriya interaction sign in Ir/Co2FeAl systems by Brillouin light scattering
• Tailoring topological Hall effect in SrRuO3/SrTiO3 superlattices
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• Bi-stability of magnetic skyrmions in ultrathin multilayer nanodots induced by magnetostatic interaction
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• Voltage-Controlled Skyrmionic Interconnect with Multiple Magnetic Information Carriers
• Measuring the Dzyaloshinskii-Moriya interaction of the epitaxial Co/Ir(111) interface
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• Current-induced nucleation and motion of zero field skyrmion
• Room Temperature Magnetic Skyrmions in Gradient-Composition Engineered CoPt Single Layers
• Tailoring Optical Excitation to Control Magnetic Skyrmion Nucleation
• Magnetization Reversal Signatures of Hybrid and Pure Néel Skyrmions in Thin Film Multilayers
• A semi-analytical approach to calculating the dynamic modes of magnetic vortices with Dzyaloshinskii-Moriya interactions
• Thermal Collapse of a Skyrmion
• Precipitating Ordered Skyrmion Lattices from Helical Spaghetti
• Stability and Metastability of Skyrmions in Thin Lamellae of Cu${}_2$OSeO${}_3$
• Fluctuation-induced Néel and Bloch skyrmions at topological insulator surfaces
• Materials for Quantum Technologies: a Roadmap for Spin and Topology
• Traps for pinning and scattering of antiferromagnetic skyrmions via magnetic properties engineering
• Controlling the nucleation and annihilation of skyrmions with magnetostatic interactions
• Robust skyrmion mediated reversal of ferromagnetic nanodots of 20 nm lateral dimension with high Ms and moderate DMI
• Room-Temperature Magnetic Skyrmions in Pt/Co/Cu Multilayers
• Magnetic Skyrmion Transport in a Nanotrack With Spatially Varying Damping and Non-adiabatic Torque
• Topological Hall effect in diffusive ferromagnetic thin films with spin-flip scattering
• Temperature-induced increase of spin spiral periods
• Higher-dimensional Wannier interpolation for the modern theory of the Dzyaloshinskii-Moriya interaction: Application to Co-based trilayers
• Scanning electron microscopy with polarization analysis for multilayered chiral spin textures
• Resonant optical topological Hall conductivity from skyrmions
• Commensuration Effects on Skyrmion Hall Angle and Drag for Manipulation of Skyrmions on Two-Dimensional Periodic Substrates
• Thermal evolution of skyrmion formation mechanism in chiral multilayer films
• Hopfion Dynamics in Chiral Magnets
• Cooperative Charge Pumping and Enhanced Skyrmion Mobility
• Engineering the dynamics of topological spin textures by anisotropic spin-orbit torques
• A model for individual quantal nano-skyrmions
• Analytical and numerical $K_u-B$ phase diagrams for cobalt nanostructures: stability region for a Bloch skyrmion
• Energy-efficient generation of skyrmion phases in Co/Ni/Pt-based multilayers using Joule heating
• Determination of the energy of the Dzyaloshinskii-Moriya interaction in [Co/Pd(111)]5 superlattices with different Co thickness by micromagnetic simulations of labyrinth domain structures
• Revealing the correlation between real-space structure and chiral magnetic order at the atomic scale
• Chirality inversion and radius blow-up of a Néel-type skyrmion by a Pearl vortex
• Local control of a single nitrogen-vacancy center by nanoscale engineered magnetic domain wall motions
• Prediction of confined and controllable Bloch points in nanocubes of chiral magnets
• Skyrmion Lattice Collapse and Defect-Induced Melting in Chiral Magnetic Films
• Densely packed skyrmions stabilized at zero magnetic field by indirect exchange coupling in multilayers
• Dynamic symmetry breaking in chiral magnetic systems
• Current-Induced Dynamics of Chiral Magnetic Structures: Creation, Motion, and Applications
• Antiskyrmions and their electrical footprint in crystalline mesoscale structures of Mn${}_{1.4}$PtSn
• Enhanced Magneto-optical Kerr Effect at Fe/Insulator Interfaces
• Electric-field-induced formation and annihilation of skyrmions in two-dimensional magnet
• Quantifying symmetric exchange in ultrathin ferromagnetic films with chirality
• Non-collinear ground state from a four-spin chiral exchange in a tetrahedral magnet
• Dynamics of interacting skyrmions in magnetic nano-track
• The higher-order magnetic skyrmions in non-uniform magnetic fields
• Topological Hall effect for electron scattering on skyrmions in external magnetic field
• Observation by SANS and PNR of pure Néel-type domain wall profiles and skyrmion suppression below room temperature in magnetic [Pt/CoFeB/Ru]${}_{10}$ multilayers
• Micromagnetic Simulations Study of Skyrmions in Magnetic FePt Nanoelements
• Field-driven collapsing dynamics of skyrmions in magnetic multilayers
• The determination of the Dzyaloshinskii-Moriya interaction in exchange biased Au/Co/NiO system
• Nano-engineering the evolution of skyrmion crystal in synthetic antiferromagnets
• Coherent backscattering in the topological Hall effect
• Unified framework of the microscopic Landau-Lifshitz-Gilbert equation and its application to Skyrmion dynamics
• Stabilization and helicity control of hybrid magnetic skyrmion
• Nature of Interfacial Dzyaloshinskii-Moriya Interactions in Graphene/Co/Pt(111) Multilayer Heterostructures
• Spin-wave mediated interactions for Majority Computation using Skyrmions and Spin-torque Nano-oscillators
• Tailoring Zero-Field Magnetic Skyrmions in Chiral Multilayers by a Duet of Interlayer Exchange Couplings
• Creation of Localized Skyrmion Bubbles in Co/Pt Bilayers using a Spin Valve Nanopillar
• Controlling skyrmion bubble confinement by dipolar interactions
• Tuning the coexistence regime of incomplete and tubular skyrmions in ferro/ferri/ferromagnetic trilayers
• Topological meron-antimeron domain walls and skyrmions in a low-symmetry system
• Semi-realistic tight-binding model for Dzyaloshinskii-Moriya interaction
• Designing layered 2D skyrmion lattices in moiré magnetic hetero-structures
• Layer effects on the magnetic textures in magnets with local inversion asymmetry
• Quantifying the thermal stability in perpendicularly magnetized ferromagnetic nanodisks with forward flux sampling
• Multi-Angle Reconstruction of Domain Morphology with All-Optical Diamond Magnetometry
• Effects of interlayer exchange on collapse mechanisms and stability of magnetic skyrmions
• Energy efficient and fast reversal of a fixed skyrmions with spin current assisted by voltage controlled magnetic anisotropy
• Tailoring Magnetic Skyrmions by Geometric Confinement of Magnetic Structures
• Magnetic interlayer coupling between ferromagnetic SrRuO${}_3$ layers through a SrIrO${}_3$ spacer
• Chirality-induced linear response properties in non-coplanar Mn${}_3$Ge
• Regular and in-plane skyrmions and antiskyrmions from boundary instabilities
• Control of the magnetic anisotropy in multi-repeat Pt/Co/Al heterostructures using magneto-ionic gating
• Magnetic skyrmions under confinement
• Theory of an electron asymmetric scattering on skyrmion textures in two-dimensional systems
• Nonlinear dynamics of topological helicity wave in a frustrated skyrmion string
• Channeling Skyrmions: suppressing the skyrmion Hall effect in ferrimagnetic nanostripes
• Controlling magnetic skyrmion nucleation with Ga+ ion irradiation
• Spin orbit effects in CoFeB/MgO hetereostructures with heavy metal underlayers
• Skyrmion bound state and dynamics in an antiferromagnetic bilayer racetrack
• Defect-Correlated Skyrmions and Controllable Generation in Perpendicularly Magnetized CoFeB Ultrathin Films
• Magnetization statics and dynamics in (Ir/Co/Pt)${}_6$ multilayers with Dzyaloshinskii-Moriya interaction
• High-resolution combined tunneling electron charge and spin transport theory of Néel and Bloch skyrmions
• A Ti/Pt/Co multilayer stack for transfer function based magnetic force microscopy calibrations
• Zero-field topological Hall effect in BiSb/MnGa bi-layers as a signature of ground-state skyrmions at room temperature
• Effect of Magnetic Anisotropy and Gradient-Induced Dzyaloshinskii-Moriya Interaction on the Formation of Magnetic Skyrmions
• Stability and magnetic properties of Fe double-layers on Ir (111)
• Transformation of a cellular skyrmion to polyomino-like structures
• Surface pinning and triggered unwinding of skyrmions in a cubic chiral magnet
• Brightening odd-parity excitons in transition-metal dichalcogenides: Rashba spin-orbit interaction, skyrmions, and cavity polaritons
• A proposal for skyrmion-based diode-like device in antiferromagnetic nanostripe
• Structural transitions of skyrmion lattices in synthetic antiferromagnets
• Quantifying the magnetic interactions governing chiral spin textures using deep neural networks
• Machine-Learning Recognition of Dzyaloshinskii-Moriya Interaction from Magnetometry
• Resonant dynamics of skyrmion lattices in thin film multilayers: Localised modes and spin wave emission
• Synthesizing and Controlling Helical Indirect Exchange Interactions at Nonequilibrium
• Quantum phase transitions of a generalized compass chain with staggered Dzyaloshinskii-Moriya interaction
• Atomic-scale Dzyaloshinskii-Moriya-modified Yoshimori spirals in Fe double layer on Ir(110)
• Electric field effect on electron gas spins in two-dimensional magnets with strong spin-orbit coupling
• Operando Control of Skyrmion Density in a Lorentz Transmission Electron Microscope with Current Pulses
• Insights into the orbital magnetism of noncollinear magnetic systems
• Zero Field Antiferromagnetically Coupled Skyrmions and their Field-Driven Uncoupling in Composite Chiral Multilayers
• Tailoring magnetic interactions in atomic bilayers of Rh and Fe on Re(0001)
• Theory of surface-induced multiferroicity in magnetic materials, thin films and multilayers
• Hedgehog Skyrmion Bubbles in Ultrathin Films with Interfacial Dzyaloshinskii-Moriya Interactions
• Vital role of anisotropy in cubic chiral skyrmion hosts
• Spin-orbit coupled Hubbard skyrmions
• Signatures of quartic asymmetric exchange in a class of two dimensional magnets
• Dzyaloshinskii-Moriya interaction induced extrinsic linewidth broadening of ferromagnetic resonance
• Length-scale independent skyrmion and meron Hall angles
• Ultrafast ratchet dynamics of skyrmion by defect engineering under gigahertz magnetic fields
• Theory of high-resolution tunneling spin transport on a magnetic skyrmion
• Observation of Skyrmion Bubbles in Multilayer [Pt/Co/Cu]n using spin-polarized STM
• Tuning non-collinear magnetic states by hydrogenation
• Lifetime of racetrack skyrmions
• Observation of a non-reciprocal skyrmion Hall effect of hybrid chiral skyrmion tubes in synthetic antiferromagnetic multilayers
• Long lifetimes of nanoscale skyrmions in lithium-decorated van der Waals ferromagnet Fe${}_3$GeTe${}_2$
• Universality of defect-skyrmion interaction profiles
• Hydrogen toggling between Yoshimori spin spirals and elliptical Dzyaloshinskii-Moriya skyrmions in Fe on Ir(110)
• Skyrmion nucleation via localized spin current injection in confined nanowire geometry in low chirality magnetic materials
• Enhanced Curie temperature and room-temperature 50-nm skyrmions achieved in hexagonal ferromagnet Mn5Ge3+x synthesized via a high-pressure method
• Spin-Hall nano-oscillator with oblique magnetization and Dzyaloshinskii-Moriya interaction as generator of skyrmions and nonreciprocal spin-waves
• Phase Transitions of Chiral Spin Textures via Dipolar Coupling in Multilayered Films with Interfacial DMI
• High-resolution tunneling spin transport characteristics of topologically distinct magnetic skyrmionic textures from theoretical calculations
• Shape-dependence of the barrier for skyrmions on a two-lane racetrack
• Magnetic Bloch-point hopping in multilayer skyrmions and associated emergent electromagnetic signatures
• Direct imaging of chiral domain walls and Néel-type skyrmionium in ferrimagnetic alloys
• Strong Coupling between Propagating Magnons and High-order Gyrotropic Skyrmion Modes
• Moiré spintronics: Emergent phenomena, material realization and machine learning accelerating discovery
• A new skyrmion topological transition driven by higher-order exchange interactions in Janus MnSeTe
• Dzyaloshinskii-Moriya interaction chirality reversal with ferromagnetic thickness
• Observation of hedgehog skyrmions in sub-100 nm soft magnetic nanodots
• Observation of magnetic skyrmions in unpatterned symmetric multilayers at room temperature and zero magnetic field
• Tailoring Ultrathin Magnetic Multilayers at Terraced Topologically Insulating Interfaces for Perpendicularly Magnetized Domains
• Control of skyrmion chirality in Ta/FeCoB/TaOx trilayers by TaOx oxidation and FeCoB thickness
• Asymmetric defect distribution generates bulk Dzyaloshinskii-Moriya interaction in Pt/Co/Pt
• Observation of multi-skyrmion objects created by size and density control in Ta/CoFeB/MgO films
• A perpendicular field electromagnet with a 250mm access bore
• Skyrmion stacking in stray field-coupled ultrathin ferromagnetic multilayers
• Coupled gyration modes and propagation in one-dimensional periodic skyrmion arrays as reliable information carrier
• Chiral spin spiral in synthetic antiferromagnets probed by circular dichroism in x-ray resonant magnetic scattering