Topological Phase Transformation and Collapse Dynamics of Spin Textures in a Non-Centrosymmetric D<sub>2d</sub> System
- Author(s)
- Jagannath Jena, Sabri Koraltan, Florian Bruckner, Konstantin Holst, Malleswararao Tangi, Claas Abert, Claudia Felser, Dieter Suess, Stuart S.P. Parkin
- Abstract
Recently a large variety of non-collinear spin textures have been revealed in various crystals with different symmetry groups. Of particular interest are crystals with D2d symmetry that exhibit a complex variety of stable and metastable spin textures that includes antiskyrmions, elliptical Bloch-skyrmions, fractional-antiskyrmions, fractional Bloch-skyrmions, and type-II trivial-bubbles. The observation of these structures necessitates their stabilization via magnetic field and temperature protocols which demands a thorough understanding of their creation, transformation, and collapse dynamics. Utilizing the real-space imaging capabilities of Lorentz transmission electron microscopy, the generation and annihilation of diverse spin textures in a single D2d Heusler compound are demonstrated. It is showed that antiskyrmions and elliptical Bloch-skyrmions can be deformed into more elaborate elongated magnetic nano-objects through a collapse mechanism. Their elongation is governed by the intrinsic antisymmetric Dzyaloshinskii-Moriya vector exchange interaction and dipolar energy present in the system. Furthermore, antiskyrmions are found to be metastable at all temperatures on field-cooling, while a topological phase transformation from elliptical Bloch-skyrmions to antiskyrmions rather takes places on field-heating. These results are corroborated by micromagnetic simulations and demonstrate the efficient manipulation of different spin textures in a D2d compound by varying field and temperature protocols and represents a critical step toward the application of magnetic skyrmions.
- Organisation(s)
- Physics of Functional Materials, Computational and Soft Matter Physics, Research Platform MMM Mathematics-Magnetism-Materials
- External organisation(s)
- Max Planck Institute of Microstructure Physics, Martin-Luther-Universität Halle-Wittenberg, Max-Planck-Institut für Chemische Physik fester Stoffe
- Journal
- Advanced Functional Materials
- No. of pages
- 15
- ISSN
- 1616-301X
- DOI
- https://doi.org/10.1002/adfm.202403358
- Publication date
- 04-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103009 Solid state physics, 103017 Magnetism
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Chemistry(all), Biomaterials, Materials Science(all), Condensed Matter Physics, Electrochemistry
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/topological-phase-transformation-and-collapse-dynamics-of-spin-textures-in-a-noncentrosymmetric-d2d-system(bbb88ee5-06d1-4a52-b7a3-593da9509733).html