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  Role of Magnetic Exchange Interactions in Chiral-Type Hall Effects of Epitaxial MnxPtSn Films

Swekis, P., Gayles, J., Kriegner, D., Fecher, G. H., Sun, Y., Goennenwein, S. T. B., et al. (2021). Role of Magnetic Exchange Interactions in Chiral-Type Hall Effects of Epitaxial MnxPtSn Films. ACS Applied Electronic Materials, 3(3), 1323-1333. doi:10.1021/acsaelm.0c01104.

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 Creators:
Swekis, Peter1, Author              
Gayles, Jacob1, Author              
Kriegner, Dominik1, Author              
Fecher, Gerhard H.2, Author              
Sun, Yan1, Author              
Goennenwein, Sebastian T. B.3, Author
Felser, Claudia4, Author              
Markou, Anastasios1, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
3External Organizations, ou_persistent22              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Tetragonal Mn-based Heusler compounds feature multiple exchange interactions resulting in exotic topological magnetic textures, such as antiskyrmions that are complimented by the chiral-type Hall effects. This makes the material class particularly interesting for device applications. We report the relation of the magnetic exchange interactions to the thickness and Mn concentration of MnxPtSn thin films, grown by magnetron cosputtering. The competition of the magnetic exchange interactions determines the finite temperature magnetic texture and thereby the chiral-type Hall effects in external magnetic fields. We investigate the magnetic and transport properties as a function of magnetic field and temperature. We focus on the anomalous and chiral-type Hall effects and the behavior of the dc magnetization in relation to chiral spin textures. We further determine the stable crystal phase for a relative Mn concentration between 1.5 and 1.85 in the I (4) over bar 2d structure. We observe a spin-reorientation transition in all compounds studied, originating from the competition of exchange interactions on different Mn sublattices. We discuss our results in terms of exchange interactions and compare them with theoretical atomistic spin calculations.

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Language(s): eng - English
 Dates: 2021-02-152021-02-15
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000634556600032
DOI: 10.1021/acsaelm.0c01104
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Title: ACS Applied Electronic Materials
  Other : ACS appl. electron. mater.
  Abbreviation : ACS AEM
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Socitey
Pages: - Volume / Issue: 3 (3) Sequence Number: - Start / End Page: 1323 - 1333 Identifier: ISSN: 2637-6113
CoNE: https://pure.mpg.de/cone/journals/resource/2637-6113