A spin model for intrinsic antiferromagnetic skyrmions on a triangular lattice
arXiv:2302.14398 · doi:10.3389/fphy.2023.1175317
Abstract
Skyrmions are prospected as the potential future of data storage due to their topologically protected spin structures. However, traditional ferromagnetic (FM) skyrmions experience deflection when driven with an electric current, hindering their usage in spintronics. Antiferromagnetic (AFM) skyrmions, consisting of two FM solitons coupled antiferromagnetically, are predicted to have a zero Magnus force, making them promising candidates for spintronic racetrack memories. Currently, they have been stabilized in synthetic AFM structures, i.e. multilayers hosting FM skyrmions, which couple antiferromagnetically through a non-magnetic spacer, while recent first-principles simulations predict their emergence in an intrinsic form, within an row-wise AFM single monolayer of Cr deposited on PdFe bilayer grown on Ir(111) surfaces. The latter material forms a triangular lattice, where single and interlinked AFM skyrmions can be stabilized. Here, we explore the minimal Heisenberg model enabling the occurrence of such AFM solitons and the underlying phase diagrams by accounting for the interplay between the Dzyaloshinskii-Moriya and Heisenberg exchange interactions, as well as the magnetic anisotropy and impact of magnetic field. By providing the fundamental basis to identify and understand the behavior of intrinsic AFM skyrmions, we anticipate our model to become a powerful tool for exploring and designing new topological magnetic materials to conceptualize devices for AFM spintronics.
arXiv comment21 pages, 3 figures
References in corpus (50)
- Skyrmion Lattice in a Chiral Magnet
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Spin Transfer Torques in MnSi at Ultra-low Current Densities
- Direct Observation of the Skyrmion Hall Effect
- Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction
- Theory of current-driven motion of Skyrmions and spirals in helical magnets
- Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
- Static and Dynamical Properties of Antiferromagnetic Skyrmions in the Presence of Applied Current and Temperature
- Field-Dependent Size and Shape of Single Magnetic Skyrmions
- Antiferromagnetic Skyrmion: Stability, Creation and Manipulation
- Skyrmion-electronics: Writing, deleting, reading and processing magnetic skyrmions toward spintronic applications
- Chiral skyrmions in thin magnetic films: new objects for magnetic storage technologies?
- A theory on skyrmion size and profile
- Full phase diagram of isolated skyrmions in a ferromagnet
- Particle model for skyrmions in metallic chiral magnets: dynamics, pinning and creep
- Physical foundations and basic properties of magnetic skyrmions
- Electrical detection of magnetic skyrmions by non-collinear magnetoresistance
- Antiferromagnetic Half-skyrmions and Bimerons at room temperature
- Statics and Dynamics of Skyrmions Interacting with Pinning: A Review
- Method for finding mechanism and activation energy of magnetic transitions, applied to skyrmion and antivortex annihilation
- Fractional antiferromagnetic skyrmion lattice induced by anisotropic couplings
- Spirit: Multifunctional Framework for Atomistic Spin Simulations
- Antiferromagnetic skyrmion crystals: generation, topological Hall and topological spin Hall effect
- Performance of synthetic antiferromagnetic racetrack memory: domain wall vs skyrmion
- Three-sublattice Skyrmion crystal in the antiferromagnetic triangular lattice
- Perpendicular Reading of Single Confined Magnetic Skyrmions
- Imaging non-collinear antiferromagnetic textures via single spin relaxometry
- Skyrmions in synthetic antiferromagnets and their nucleation via electrical current and ultrafast laser illumination
- Formation of magnetic skyrmions with tunable properties in PdFe bilayer deposited on Ir(111)
- Phenomenology of current-induced skyrmion motion in antiferromagnets
- Theory of Topological Spin Hall Effect in Antiferromagnetic Skyrmion: Impact on Current-induced Motion
- Stability and lifetime of antiferromagnetic skyrmions
- Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures
- Discovery of magnetic single- and triple-Q states in Mn/Re(0001)
- Duplication, collapse and escape of magnetic skyrmions revealed using a systematic saddle point search method
- Skyrmions in square-lattice antiferromagnets
- Spin-resolved inelastic electron scattering by spin waves in noncollinear magnets
- Spontaneous antiferromagnetic skyrmion/antiskyrmion lattice and spiral spin liquid states in the frustrated triangular lattice
- Skyrmions in antiferromagnets: thermal stability and the effect of external field and impurities
- Anisotropy driven response of skyrmion lattice in MnScS to applied magnetic fields
- Transverse Transport in Two-Dimensional Relativistic Systems with Non-Trivial Spin Textures
- Indirect Chiral Magnetic Exchange through Dzyaloshinskii-Moriya--Enhanced RKKY Interactions in Manganese Oxide Chains on Ir(100)
- Modelling spin waves in noncollinear antiferromagnets: spin-flop states, spin spirals, skyrmions and antiskyrmions
- Spirals and skyrmions in antiferromagnetic triangular lattices
- Emergence of zero-field non-synthetic single and interchanged antiferromagnetic skyrmions in thin films
- Spin-orbit enabled all-electrical readout of chiral spin-textures
- Domain Walls in a Row-Wise Antiferromagnetic Mn Monolayer
- Friedel oscillations induced by magnetic skyrmions: from scattering properties to all-electrical detection