Antiskyrmions and their electrical footprint in crystalline mesoscale structures of MnPtSn
arXiv:2111.02494 · doi:10.1038/s43246-022-00323-6
Abstract
Skyrmionic materials hold the potential for future information technologies, such as racetrack memories. Key to that advancement are systems that exhibit high tunability and scalability, with stored information being easy to read and write by means of all-electrical techniques. Topological magnetic excitations such as skyrmions and antiskyrmions, give rise to a characteristic topological Hall effect. However, the electrical detection of antiskyrmions, in both thin films and bulk samples has been challenging to date. Here, we apply magneto-optical microscopy combined with electrical transport to explore the antiskyrmion phase as it emerges in crystalline mesoscale structures of the Heusler magnet MnPtSn. We reveal the Hall signature of antiskyrmions in line with our theoretical model, comprising anomalous and topological components. We examine its dependence on the vertical device thickness, field orientation, and temperature. Our atomistic simulations and experimental anisotropy studies demonstrate the link between antiskyrmions and a complex magnetism that consists of competing ferromagnetic, antiferromagnetic, and chiral exchange interactions, not captured by micromagnetic simulations.
arXiv comment30 pages, 4 figures, Supplementary Information with additional 22 pages and 16 figures
References in corpus (32)
- Skyrmion Lattice in a Chiral Magnet
- Anomalous Hall effect
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Topological Hall effect in the A-phase of MnSi
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- Discovery of Magnetic Antiskyrmions Beyond Room Temperature in Tetragonal Heusler Materials
- Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
- Magnetic skyrmion artificial synapse for neuromorphic computing
- Topological Hall effect and Berry phase in magnetic nanostructures
- The 2020 Skyrmionics Roadmap
- Thermal skyrmion diffusion applied in probabilistic computing
- Electrical signature of individual magnetic skyrmions in multilayered systems
- New type of stable particle like states in chiral magnets (Chiral bobbers)
- Magnetic bimerons as skyrmion analogues in in-plane magnets
- Room-temperature antiskyrmions and sawtooth surface textures in a noncentrosymmetric magnet with symmetry
- Electronic in-plane symmetry breaking at field-tuned quantum criticality in CeRhIn5
- Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs
- Theory of Topological Spin Hall Effect in Antiferromagnetic Skyrmion: Impact on Current-induced Motion
- Direct visualization of three-dimensional shape of skyrmion strings in a noncentrosymmetric magnet
- The chiral Hall effect of magnetic skyrmions from a cyclic cohomology approach
- Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 FeCoGe films
- Anisotropic Topological Hall Effect with Real and Momentum Space Berry Curvature in the Antiskrymion Hosting Heusler Compound MnPtSn
- Metamagnetic texture in a polar antiferromagnet
- Tetragonal superstructure of the antiskyrmion hosting Heusler compound Mn1.4PtSn
- Engineering Chiral and Topological Orbital Magnetism of Domain Walls and Skyrmions
- Nano-to-micro spatiotemporal imaging of magnetic skyrmion's life cycle
- New highly-anisotropic Rh-based Heusler compound for magnetic recording
- Topological Hall effect arising from the mesoscopic and microscopic non-coplanar magnetic structure in MnBi
- Anisotropic fractal magnetic domain pattern in bulk MnPtSn
- Role of magnetic exchange interactions in chiral-type Hall effects of epitaxial MnPtSn films
- Critical Sample Aspect Ratio and Magnetic Field Dependence for Antiskyrmion Formation in Mn1.4PtSn Single-Crystals