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  Large topological Hall effect in an easy-cone ferromagnet (Cr0.9B0.1)Te

He, Y., Kroder, J., Gayles, J., Fu, C., Pan, Y., Schnelle, W., et al. (2020). Large topological Hall effect in an easy-cone ferromagnet (Cr0.9B0.1)Te. Applied Physics Letters, 117(5): 052409, pp. 1-6. doi:10.1063/5.0018229.

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 Creators:
He, Yangkun1, Author           
Kroder, Johannes1, Author           
Gayles, Jacob1, Author           
Fu, Chenguang1, Author           
Pan, Yu1, Author           
Schnelle, Walter2, Author           
Felser, Claudia3, Author           
Fecher, Gerhard H.4, Author           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
4Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              

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 Abstract: The Berry phase understanding of electronic properties has attracted special interest in condensed matter physics, leading to phenomena such as the anomalous Hall effect and the topological Hall effect. A non-vanishing Berry phase, induced in momentum space by the band structure or in real space by a non-coplanar spin structure, is the origin of both effects. Here, we report a sign conversion of the anomalous Hall effect and a large topological Hall effect in (Cr0.9B0.1)Te single crystals. The spin reorientation from an easy-axis structure at high temperature to an easy-cone structure below 140K leads to conversion of the Berry curvature, which influences both, anomalous and topological, Hall effects in the presence of an applied magnetic field and current. We compare and summarize the topological Hall effect in four categories with different mechanisms and have a discussion into the possible artificial fake effect of the topological Hall effect in polycrystalline samples, which provides a deep understanding of the relation between the spin structure and Hall properties.

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Language(s): eng - English
 Dates: 2020-08-072020-08-07
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000560765900006
DOI: 10.1063/5.0018229
 Degree: -

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Title: Applied Physics Letters
  Abbreviation : Appl. Phys. Lett.
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: - Volume / Issue: 117 (5) Sequence Number: 052409 Start / End Page: 1 - 6 Identifier: ISSN: 0003-6951
CoNE: https://pure.mpg.de/cone/journals/resource/954922836223