Skyrmions in square-lattice antiferromagnets

Abstract

The ground states of square lattice two-dimensional antiferromagnets with anisotropy in an external magnetic field are determined using Monte Carlo simulations and compared to theoretical analysis. We find a new phase in between the spin-flop and spiral phase that shows strong similarity to skyrmions in ferromagnetic thin films. We show that this phase arises as a result of the competition between Zeeman and Dzyaloshinskii-Moriya interaction energies of the magnetic system. Moreover, we find that isolated (anti-)skyrmions are stabilized in finite-sized systems, even at higher temperatures. The existence of thermodynamically stable skyrmions in square-lattice antiferromagnets provides an appealing alternative over skyrmions in ferromagnets as data carriers.

arXiv comment7 pages, 4 figures

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Cited by in corpus (21)

• Theory of Topological Spin Hall Effect in Antiferromagnetic Skyrmion: Impact on Current-induced Motion
• Stability and lifetime of antiferromagnetic skyrmions
• Ultrafast generation and dynamics of isolated skyrmions in antiferromagnetic insulators
• Antiferromagnetism emerging in a ferromagnet with gain
• Dynamical and Reversible Control of Topological Spin Textures
• Skyrmions and multi-sublattice helical states in a frustrated chiral magnet
• Dzyaloshinskii-Moryia interaction at an antiferromagnetic interface: first-principles study of FeIr bilayers on Rh(001)
• Skyrmions in antiferromagnets: thermal stability and the effect of external field and impurities
• Magnon driven skyrmion dynamics in antiferromagnets: The effect of magnon polarization
• Modelling spin waves in noncollinear antiferromagnets: spin-flop states, spin spirals, skyrmions and antiskyrmions
• Emergence of zero-field non-synthetic single and interchanged antiferromagnetic skyrmions in thin films
• From skyrmions to Z2 vortices in distorted chiral antiferromagnets
• Theoretical investigation of antiferromagnetic skyrmions in a triangular monolayer
• Stabilization of the skyrmion crystal phase in thin-film antiferromagnets
• Heisenberg-exchange-free nanoskyrmion mosaic
• A spin model for intrinsic antiferromagnetic skyrmions on a triangular lattice
• Complex magnetic phases in polar tetragonal intermetallic NdCoGe${}_3$
• Complex magnetism of the two-dimensional antiferromagnetic Ge2F: from a Néel spin-texture to a potential antiferromagnetic skyrmion
• Skyrmion crystals in frustrated Shastry-Sutherland magnets
• Signal detection based on the chaotic motion of an antiferromagnetic domain wall
• Robust dynamics of antiferromagnetic skyrmion driven by spin-polarized current in small thin disks