Controllable inter-skyrmion attractions and resulting skyrmion-lattice structures in two-dimensional chiral magnets with in-plane anisotropy
arXiv:2107.00201 · doi:10.1103/PhysRevB.104.174446
Abstract
We study inter-skyrmion interactions and stable spin configurations in a 2D chiral magnet with in-plane anisotropies of a tilted magnetic field and the magneto-crystalline anisotropy on a (011) thin film. We find that in both cases a small deformation of a skyrmion shape makes the inter-skyrmion interaction anisotropic, and that the skyrmions are weakly bounded along a certain direction due to an emergent attractive interaction. Furthermore, when the magneto-crystalline anisotropy is comparable to the Zeeman energy, skyrmions embedded in a uniform magnetization are tightly bound by creating a magnetic domain between them. The formation of the magnetic domain, and thus the strength of the inter-skyrmion interaction, can be controlled by the direction of an external magnetic field. The anisotropic interaction also affects the skyrmion alignment in the skyrmion crystal (SkX) phase. By employing the Monte Carlo simulation and the micromagnetic simulation, we obtain an elongated triangular lattice structure in the SkX phase. In particular, in the presence of a strong magneto-crystalline anisotropy, magnetic domains appear in the background of the lattice structure, and bimerons aligned on the domain walls form an elongated triangular lattice. We also find a parameter region that the SkX phase is stabilized due to the inter-skyrmion attraction.
arXiv comment21 pages,17 figures
References in corpus (53)
- Skyrmion Lattice in a Chiral Magnet
- Exchange Monte Carlo Method and Application to Spin Glass Simulations
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Direct Observation of the Skyrmion Hall Effect
- Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
- Skyrmion Hall Effect Revealed by Direct Time-Resolved X-Ray Microscopy
- Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet
- Discovery of Magnetic Antiskyrmions Beyond Room Temperature in Tetragonal Heusler Materials
- Theory of current-driven motion of Skyrmions and spirals in helical magnets
- Multiple-q states and skyrmion lattice of the triangular-lattice Heisenberg antiferromagnet under magnetic fields
- Magnetic bilayer-skyrmions without skyrmion Hall effect
- A new class of chiral materials hosting magnetic skyrmions beyond room temperature
- Field-Dependent Size and Shape of Single Magnetic Skyrmions
- Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
- Electric field driven switching of individual magnetic skyrmions
- Nanometric square skyrmion lattice in a centrosymmetric tetragonal magnet
- Precursor phenomena at the magnetic ordering of the cubic helimagnet FeGe
- Particle model for skyrmions in metallic chiral magnets: dynamics, pinning and creep
- A centrosymmetric hexagonal magnet with superstable biskyrmion magnetic nanodomains in a wide temperature range of 100K to 340K
- Ginzburg-Landau theory for skyrmions in inversion-symmetric magnets with competing interactions
- Robust metastable skyrmions and their triangular-square lattice-structural transition in a high-temperature chiral magnet
- Electrical detection of magnetic skyrmions by non-collinear magnetoresistance
- Magnetic Skyrmion State in Janus Monolayers of Chromium Trihalides Cr(I,X)3
- Multisolitons in a Two-dimensional Skyrme Model
- Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization
- Magnetoelectric nature of skyrmions in a chiral magnetic insulator Cu2OSeO3
- Multiferroicity and skyrmions carrying electric polarization in GaV4S8
- Magnetic Skyrmions for Unconventional Computing
- Chiral surface twists and skyrmion stability in nanolayers of cubic helimagnets
- Interaction of Individual Skyrmions in Nanostructured Cubic Chiral Magnet
- Skyrmions with attractive interactions in an ultrathin magnetic film
- Magnetic domain wall Skyrmions
- Dynamical magnetoelectric phenomena of multiferroic skyrmions
- Skyrmion formation in a bulk chiral magnet at zero magnetic field and above room temperature
- Asymmetric isolated skyrmions in polar magnets with easy-plane anisotropy
- Observation of domain wall bimerons in chiral magnets
- Stability and lifetime of antiferromagnetic skyrmions
- Three-dimensional chiral skyrmions with attractive interparticle interactions
- Metastable skyrmion lattices governed by magnetic disorder and anisotropy in -Mn-type chiral magnets
- Direct Observation of Attractive Skyrmions and Skyrmion Clusters in the Cubic Helimagnet CuOSeO
- Skyrmion-Skyrmion Interaction in a Magnetic Film
- Low spin wave damping in the insulating chiral magnet CuOSeO
- Creation of Skyrmions by Electric Field on Chiral-Lattice Magnetic Insulators
- Writing a skyrmion on multiferroic materials
- Forming individual magnetic biskyrmions by merging two skyrmions in a centrosymmetric nanodisk
- Mobile Néel skyrmions at room temperature: status and future
- Non-circular skyrmion and its anisotropic response in thin films of chiral magnets under tilted magnetic field
- Emergence of Transient Domain Wall Skyrmions after Ultrafast Demagnetisation
- Imaging and manipulation of skyrmion lattice domains in Cu2OSeO3
- Spin Wave Radiation by a Topological Charge Dipole
- Skyrmionic magnetization configurations at chiral magnet/ferromagnet heterostructures
- Biskyrmions Lattices in Centrosymmetric Magnetic Films
- Thermal Collapse of a Skyrmion