Spirals and skyrmions in antiferromagnetic triangular lattices

Abstract

We study realizations of spirals and skyrmions in two-dimensional antiferromagnets with a triangular lattice on an inversion-symmetry-breaking substrate. As a possible material realization, we investigate the adsorption of transition-metal atoms (Cr, Mn, Fe, or Co) on a monolayer of MoS${}_2$, WS${}_2$, or WSe${}_2$ and obtain the exchange, anisotropy, and Dzyaloshinskii-Moriya interaction parameters using first-principles calculations. Using energy minimization and parallel-tempering Monte-Carlo simulations, we determine the magnetic phase diagrams for a wide range of interaction parameters. We find that skyrmion lattices can appear even with weak Dzyaloshinskii-Moriya interactions, but their stability is hindered by magnetic anisotropy. However, a weak easy plane magnetic anisotropy can be beneficial for stabilizing the skyrmion phase. Our results suggest that Cr$/$MoS${}_2$, Fe$/$MoS${}_2$, and Fe$/$WSe${}_2$ interfaces can host spin spirals formed from the 120${}^{\circ }$ antiferromagnetic states. Our results further suggests that for other interfaces, such as Fe$/$MoS${}_2$, the Dzyaloshinskii-Moriya interaction is strong enough to drive the system into a three-sublattice skyrmion lattice in the presence of experimentally feasible external magnetic field.

arXiv comment11 pages, 10 figures

References in corpus (32)

• Skyrmion Lattice in a Chiral Magnet
• Antiferromagnetic spintronics
• Exchange Monte Carlo Method and Application to Spin Glass Simulations
• Spontaneous Skyrmion Ground States in Magnetic Metals
• Simulated Tempering: A New Monte Carlo Scheme
• Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
• Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
• Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
• Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
• Static and Dynamical Properties of Antiferromagnetic Skyrmions in the Presence of Applied Current and Temperature
• Multiply periodic states and isolated skyrmions in an anisotropic frustrated magnet
• Antiferromagnetic Skyrmion: Stability, Creation and Manipulation
• Room temperature spin Hall effect in graphene/MoS${}_2$ van der Waals heterostructures
• Feedback-optimized parallel tempering Monte Carlo
• Skyrmion fractionalization and merons in chiral magnets with easy-plane anisotropy
• Fractional antiferromagnetic skyrmion lattice induced by anisotropic couplings
• Spin-valve Effect in NiFe/MoS2/NiFe Junctions
• Antiferromagnetic skyrmion crystals: generation, topological Hall and topological spin Hall effect
• Electronic structure, spin-orbit coupling, and interlayer interaction in bulk MoS2 and WS2
• Topological Magnons and Edge States in Antiferromagnetic Skyrmion Crystals
• Three-sublattice Skyrmion crystal in the antiferromagnetic triangular lattice
• Phase diagram of the classical Heisenberg antiferromagnet on a triangular lattice in applied magnetic field
• Stability of skyrmion lattices and symmetries of quasi-two-dimensional chiral magnets
• Magnetic phase diagrams of classical triangular and kagome antiferromagnets
• Skyrmions and antiskyrmions in quasi-two-dimensional magnets
• Magnetic vortex crystals in frustrated Mott insulator
• B-T phase diagram of Pd/Fe/Ir(111) computed with parallel tempering Monte Carlo
• Composite Spin Crystal Phase in Antiferromagnetic Chiral Magnets
• Formation and growth of skyrmion crystal phase in a frustrated Heisenberg antiferromagnet with Dzyaloshinskii-Moriya interaction
• Stabilization of the skyrmion crystal phase in thin-film antiferromagnets
• Magnon Landau Levels and Spin Responses in Antiferromagnets
• Emergence of a Skyrmion Phase in a Frustrated Heisenberg Antiferromagnet with Dzyaloshinskii-Moriya Interaction

Cited by in corpus (10)

• Skyrmion crystal and spiral phases in centrosymmetric bilayer magnets with staggered Dzyaloshinskii-Moriya interaction
• Spontaneous antiferromagnetic skyrmion/antiskyrmion lattice and spiral spin liquid states in the frustrated triangular lattice
• Stability of skyrmion crystal phase in antiferromagnetic triangular lattice with DMI and single-ion anisotropy
• Square skyrmion crystal in centrosymmetric systems with locally inversion-asymmetric layers
• Noncoplanar orders and quantum disordered states in maple-leaf (anti)ferromagnets
• A spin model for intrinsic antiferromagnetic skyrmions on a triangular lattice
• Robustness of topological magnons in disordered arrays of skyrmions
• Frustration-driven topological textures on the honeycomb lattice: antiferromagnetic meron-antimeron and skyrmion crystals emerging from spiral spin liquids
• Road to zero-field antiferromagnetic skyrmions in a frustrated AFM/FM heterostructure
• Anomalous Hall effect in the coplanar antiferromagnetic coloring-triangular lattice