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  Elliptical Bloch skyrmion chiral twins in an antiskyrmion system

Jena, J., Göbel, B., Ma, T., Kumar, V., Saha, R., Mertig, I., et al. (2020). Elliptical Bloch skyrmion chiral twins in an antiskyrmion system. Nature Communications, 11: 1115. doi:10.1038/s41467-020-14925-6.

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https://doi.org/10.1038/s41467-020-14925-6 (Publisher version)
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 Creators:
Jena, Jagannath1, Author              
Göbel, Börge2, Author              
Ma, Tianping1, Author              
Kumar, Vivek3, Author
Saha, Rana1, Author              
Mertig, Ingrid2, Author
Felser, Claudia3, Author
Parkin, Stuart S. P.1, Author              
Affiliations:
1Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              
2Max Planck Institute of Microstructure Physics, Max Planck Society, ou_2415691              
3External Organizations, ou_persistent22              

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 Abstract: Skyrmions and antiskyrmions are distinct topological chiral spin textures that have been observed in various material systems depending on the symmetry of the crystal structure. Here we show, using Lorentz transmission electron microscopy, that arrays of skyrmions can be stabilized in a tetragonal inverse Heusler with D2d symmetry whose Dzyaloshinskii-Moriya interaction (DMI) otherwise supports antiskyrmions. These skyrmions can be distinguished from those previously found in several B20 systems which have only one chirality and are circular in shape. We find Bloch-type elliptical skyrmions with opposite chiralities whose major axis is oriented along two specific crystal directions: [010] and [100]. These structures are metastable over a wide temperature range and we show that they are stabilized by long-range dipole-dipole interactions. The possibility of forming two distinct chiral spin textures with opposite topological charges of ±1 in one material makes the family of D2d materials exceptional.

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 Dates: 2020-02-28
 Publication Status: Published online
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 Identifiers: BibTex Citekey: P13882
DOI: 10.1038/s41467-020-14925-6
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Project name : Spin Orbitronics for Electronic Technologies (SORBET)
Grant ID : 670166
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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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: 11 Sequence Number: 1115 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723