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  Topological hall effect in Pt/Co/W multilayers with different anisotropies

Mourkas, A., Markou, A., Swekis, P., & Panagiotopoulos, I. (2021). Topological hall effect in Pt/Co/W multilayers with different anisotropies. Journal of Magnetism and Magnetic Materials, 530: 167937, pp. 1-6. doi:10.1016/j.jmmm.2021.167937.

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 Creators:
Mourkas, A.1, Author
Markou, A.2, Author              
Swekis, P.2, Author              
Panagiotopoulos, I.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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 Abstract: The chirality of non-coplanar magnetic configurations, in magnetic materials with interfacial Dzyaloshinskii?Moriya interaction, gives rise to a local magnetic field generating an extra contribution to the anomalous Hall effect. This contribution, termed topological Hall effect (THE), is studied in three Pt/Co/W multilayered samples with different effective anisotropy. A particularity of this system, compared to similar systems which show THE, is the existence of magnetically inactive layers at the Co/W interfaces. This implies that the coupling between the layers in this series of samples is mainly magnetostatic. The samples with positive or almost zero effective anisotropy show the same characteristics. These are reproduced by micromagnetic simulations. The sample with negative effective anisotropy shows a qualitatively different behaviour that can be assigned to its radically different domain structure. The values of THE are in the range 0.1?0.25 ?? cm.

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Language(s): eng - English
 Dates: 2021-07-152021-07-15
 Publication Status: Published in print
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Title: Journal of Magnetism and Magnetic Materials
  Other : Journal of Magnetism and Magnetic Materials: MMM
  Abbreviation : J. Magn. Magn. Mater.
Source Genre: Journal
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Publ. Info: Amsterdam : NH, Elsevier
Pages: - Volume / Issue: 530 Sequence Number: 167937 Start / End Page: 1 - 6 Identifier: ISSN: 0304-8853
CoNE: https://pure.mpg.de/cone/journals/resource/954925512464