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Exchange interactions in topological/antiferromagnetic heterostructures

MPG-Autoren
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Stepanyuk,  V. S.
Max Planck Institute of Microstructure Physics, Max Planck Society;

Tao,  Kun
Max Planck Institute of Microstructure Physics, Max Planck Society;

Externe Ressourcen

https://doi.org/10.1063/5.0039741
(Verlagsversion)

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Zitation

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.


Zitierlink: https://hdl.handle.net/21.11116/0000-0008-503C-B
Zusammenfassung
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.