Embedded skyrmion bags in thin films of chiral magnets
arXiv:2403.16931 · doi:10.1002/adma.202403274
Abstract
Magnetic skyrmions are topologically nontrivial spin configurations that possess particle-like properties. Earlier research was mainly focused on a specific type of skyrmion with topological charge Q = -1. However, theoretical analyses of two-dimensional chiral magnets have predicted the existence of skyrmion bags -- solitons with arbitrary positive or negative topological charge. Although such spin textures are metastable states, recent experimental observations have confirmed the stability of isolated skyrmion bags in a limited range of applied magnetic fields. Here, by utilizing Lorentz transmission electron microscopy, we show the extraordinary stability of skyrmion bags in thin plates of B20-type FeGe. In particular, we show that skyrmion bags embedded within a skyrmion lattice remain stable even in zero or inverted external magnetic fields. A robust protocol for nucleating such embedded skyrmion bags is provided. Our results agree perfectly with micromagnetic simulations and establish thin plates of cubic chiral magnets as a powerful platform for exploring a broad spectrum of topological magnetic solitons.
arXiv comment17 pages, 15 figures
References in corpus (27)
- Skyrmion Lattice in a Chiral Magnet
- Spin Transfer Torques in MnSi at Ultra-low Current Densities
- Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
- Experimental observation of magnetic bobbers for a new concept of magnetic solid-state memory
- Edge-Mediated Skyrmion Chain and Its Collective Dynamics in a Confined Geometry
- Magnetic Skyrmion Bundles and Their Current-Driven Dynamics
- Direct imaging of a zero-field target skyrmion and its polarity switch in a chiral magnetic nanodisk
- Real-space imaging of confined magnetic skyrmion tubes
- Electrical manipulation of skyrmions in a chiral magnet
- Thermal generation, manipulation and detection of skyrmions
- Chiral Magnetic Skyrmions with Arbitrary Topological Charge ("skyrmionic sacks")
- Interaction of Individual Skyrmions in Nanostructured Cubic Chiral Magnet
- Magnetic skyrmions, chiral kinks and holomorphic functions
- Direct visualization of three-dimensional shape of skyrmion strings in a noncentrosymmetric magnet
- Magnetic skyrmion braids
- Magnetic particle-antiparticle creation and annihilation
- Mechanisms of skyrmion collapse revealed by sub-nm maps of the transition rate
- Variational principles of micromagnetics revisited
- Turning chiral skyrmion inside out
- Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet
- Magnetic skyrmion binning
- Skyrmion-Bubble Bundles in an X-type Sr2Co2Fe28O46 Hexaferrite above Room Temperature
- Voltage-Controlled Skyrmionic Interconnect with Multiple Magnetic Information Carriers
- Tailed skyrmions -- an obscure branch of magnetic solitons
- Controllable Creation of Skyrmion Bags in a Ferromagnetic Nanodisk
- The skyrmion bags in an anisotropy gradient
- Global Rotation of Skyrmion Bags under Vertical Microwave Fields
Cited by in corpus (5)
- Plasmonic Twistronics: Discovery of Plasmonic Skyrmion Bags
- Stable Neel-Twisted Skyrmion Bags in a van der Waals Magnet Fe3-xGaTe2 at Room Temperature
- Skyrmion Bag Robustness in Plasmonic Bilayer and Trilayer Moiré Superlattices
- Skyrmion-Antiskyrmion Lattice: A Net-Zero Topological Phase in Low-Symmetry Frustrated Chiral Magnets
- Paradoxical Topological Soliton Lattice in Anisotropic Frustrated Chiral Magnets