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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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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-6E95-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-92AB-5
Genre: Journal Article

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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, P.1, Author
Felser, Claudia3, 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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Free keywords: Antiskyrmion, ferrimagnetic Heusler, Lorentz TEM, low magnetic moment, Mn vacancies, spintronics
 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. © 2019 American Chemical Society.

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Language(s): eng - English
 Dates: 2020-01-122020-01-12
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1021/acs.nanolett.9b02973
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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