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  Observation of magnetic antiskyrmions in the low magnetization ferrimagnet Mn2Rh0.95Ir0.05Sn

Jena, J., Stinshoff, R., Saha, R., Srivastava, A. K., Ma, T., Deniz, H., et al. (2020). Observation of magnetic antiskyrmions in the low magnetization ferrimagnet Mn2Rh0.95Ir0.05Sn. Nano Letters, 20(1), 59-65. doi:10.1021/acs.nanolett.9b02973.

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https://doi.org/10.1021/acs.nanolett.9b02973 (Publisher version)
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https://pubs.acs.org/doi/10.1021/acs.nanolett.9b02973 (Supplementary material)
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 Creators:
Jena, Jagannath1, Author              
Stinshoff, Rolf2, Author
Saha, Rana1, Author              
Srivastava, Abhay K.1, Author              
Ma, Tianping1, Author              
Deniz, Hakan1, Author              
Werner, Peter1, Author
Felser, Claudia2, 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              
2External Organizations, ou_persistent22              

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 Abstract: Recently, magnetic antiskyrmions were discovered in Mn1.4Pt0.9Pd0.1Sn, an inverse tetragonal Heusler compound that is nominally a ferrimagnet, but which can only be formed with substantial Mn vacancies. The vacancies reduce considerably the compensation of the moments between the two expected antiferromagnetically coupled Mn sub-lattices so that the overall magnetization is very high and the compound is almost a “ferromagnet”. Here, we report the observation of antiskyrmions in a second inverse tetragonal Heusler compound, Mn2Rh0.95Ir0.05Sn, which can be formed stoichiometrically without any Mn vacancies and which thus exhibits a much smaller magnetization. Individual and lattices of antiskyrmions can be stabilized over a wide range of temperature from near room temperature to 100 K, the base temperature of the Lorentz transmission electron microscope used to image them. In low magnetic fields helical spin textures are found which evolve into antiskyrmion structures in the presence of small magnetic fields. A weaker Dzyaloshinskii-Moriya interaction (DMI), that stabilizes the antiskyrmions, is expected for the 4d element Rh as compared to the 5d element Pt, so that the observation of antiskyrmions in Mn2Rh0.95Ir0.05Sn establishes the intrinsic stability of antiskyrmions in these Heusler compounds. Moreover, the finding of antiskyrmions with substantially lower magnetization promises, via chemical tuning, even zero moment antiskyrmions with important technological import.

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 Dates: 2019-12-062020-01-08
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: P13857
DOI: 10.1021/acs.nanolett.9b02973
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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: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 20 (1) Sequence Number: - Start / End Page: 59 - 65 Identifier: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403