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  Exchange interactions in topological/antiferromagnetic heterostructures

Chen, R., Dou, S., Stepanyuk, V. S., Xue, D., Jia, C., & Tao, K. (2021). Exchange interactions in topological/antiferromagnetic heterostructures. Applied Physics Letters, 118: 062410. doi:10.1063/5.0039741.

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 Creators:
Chen, RongRong1, Author
Dou, Shuang1, Author
Stepanyuk, V. S.2, Author              
Xue, DeSheng1, Author
Jia, ChengLong1, Author
Tao, Kun2, Author
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1External Organizations, ou_persistent22              
2Max Planck Institute of Microstructure Physics, Max Planck Society, ou_2415691              

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 Abstract: Performing ab initio calculations, we investigate exchange interactions between the topological insulator and the antiferromagnetic films in detail. In this work, choosing the Bi2Te3/CrSb heterostructure as a typical model system, we prove that the magnitude of the magnetic anisotropy and the spin direction of heterostructures can be manipulated by tuning the interfacial exchange coupling with the stacking modes between the Bi2Te3 and the CrSb films. The exchange gap in various heterostructures ranges from 21.1 meV in the type-C stacking to 36.2 meV in the type-B stacking. We demonstrate that the magnetic anisotropy energy of the system originates from the hybridization between different atomic orbitals at the interface. Moreover, large induced magnetic moments were found at the interface.

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 Dates: 2021-01-21
 Publication Status: Published online
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 Identifiers: DOI: 10.1063/5.0039741
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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: 118 Sequence Number: 062410 Start / End Page: - Identifier: ISSN: 0003-6951
CoNE: https://pure.mpg.de/cone/journals/resource/954922836223