Heliknoton in a film of cubic chiral magnet
arXiv:2304.10181 · doi:10.3389/fphy.2023.1201018
Abstract
Cubic chiral magnets exhibit a remarkable diversity of two-dimensional topological magnetic textures, including skyrmions. However, the experimental confirmation of topological states localized in all three spatial dimensions remains challenging. In this paper, we investigate a three-dimensional topological state called a heliknoton, which is a hopfion embedded into a helix or conic background. We explore the range of parameters at which the heliknoton can be stabilized under realistic conditions using micromagnetic modeling, harmonic transition state theory, and stochastic spin dynamics simulations. We present theoretical Lorentz TEM images of the heliknoton, which can be used for experimental comparison. Additionally, we discuss the stability of the heliknoton at finite temperatures and the mechanism of its collapse. Our study offers a pathway for future experimental investigations of three-dimensional topological solitons in magnetic crystals.
16 pages, 5 figures
References in corpus (11)
- Magnetic Skyrmion Bundles and Their Current-Driven Dynamics
- Creation and confirmation of Hopfions in magnetic multilayer systems
- Skyrmion knots in frustrated magnets
- Three-dimensional crystals of adaptive knots
- Magnetic skyrmions, chiral kinks and holomorphic functions
- Hopf solitons in helical and conical backgrounds of chiral magnetic solids
- Magnetic skyrmion braids
- Magnetic particle-antiparticle creation and annihilation
- The lifetime of micron scale topological chiral magnetic states with atomic resolution
- Stability of Hopfions in Bulk Magnets with Competing Exchange Interactions
- Lifetime, collapse and escape paths for hopfions in bulk magnets with competing exchange interactions
Cited by in corpus (8)
- Stability and Nucleation of Dipole Strings in Uniaxial Chiral Magnets
- Quantum and classical magnetic Bloch points
- Elliptical stability of hopfions in bulk helimagnets
- Topological transition from a hopfion to a toron via flexoelectric self-polarization in chiral liquid crystals
- Regularized Micromagnetic Theory for Bloch Points
- Co-existing magnetization reversal mechanisms in shakti spin ice systems
- Thermodynamic theory of square skyrmion lattice in tetragonal frustrated antiferromagnets
- Hopfions in screw chiral magnets