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  Observation of fractional spin textures in a Heusler material

Jena, J., Göbel, B., Hirosawa, T., Diaz, S. A., Wolf, D., Hinokihara, T., et al. (2022). Observation of fractional spin textures in a Heusler material. Nature Communications, 13(1): 2348, pp. 1-8. doi:10.1038/s41467-022-29991-1.

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 Creators:
Jena, Jagannath1, Author
Göbel, Börge1, Author
Hirosawa, Tomoki1, Author
Diaz, Sebastián A.1, Author
Wolf, Daniel1, Author
Hinokihara, Taichi1, Author
Kumar, Vivek2, Author              
Mertig, Ingrid1, Author
Felser, Claudia3, Author              
Lubk, Axel1, Author
Loss, Daniel1, Author
Parkin, Stuart S. P.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Recently a zoology of non-collinear chiral spin textures has been discovered, most of which, such as skyrmions and antiskyrmions, have integer topological charges. Here we report the experimental real-space observation of the formation and stability of fractional antiskyrmions and fractional elliptical skyrmions in a Heusler material. These fractional objects appear, over a wide range of temperature and magnetic field, at the edges of a sample, whose interior is occupied by an array of nano-objects with integer topological charges, in agreement with our simulations. We explore the evolution of these objects in the presence of magnetic fields and show their interconversion to objects with integer topological charges. This means the topological charge can be varied continuously. These fractional spin textures are not just another type of skyrmion, but are essentially a new state of matter that emerges and lives only at the boundary of a magnetic system. The coexistence of both integer and fractionally charged spin textures in the same material makes the Heusler family of compounds unique for the manipulation of the real-space topology of spin textures and thus an exciting platform for spintronic and magnonic applications. Skyrmions and anti-skyrmions are magnetic textures that have garnered much interest due to their stability. Here, Jena et al demonstrate the existence of fractional spin textures at the edges of Heusler alloy sample, which can have continuous variable topological charges.

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Language(s): eng - English
 Dates: 2022-04-292022-04-29
 Publication Status: Published in print
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 13 (1) Sequence Number: 2348 Start / End Page: 1 - 8 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723