Current-induced domain wall motion in a van der Waals ferromagnet Fe3GeTe2

Zhang, Wenjie; Ma, Tianping; Hazra, Binoy Krishna; Meyerheim, Holger L.; Rigvedi, Prajwal; Yin, Zihan; Srivastava, Abhay Kant; Wang, Zhong; Gu, Ke; Zhou, Shiming; Wang, Shouguo; Yang, See-Hun; Guan, Yicheng; Parkin, Stuart S. P.

doi:10.1038/s41467-024-48893-y

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学術論文

Current-induced domain wall motion in a van der Waals ferromagnet Fe₃GeTe₂

MPS-Authors

/persons/resource/persons280957

Zhang, Wenjie
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons259901

Ma, Tianping
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons260878

Hazra, Binoy Krishna
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons260281

Meyerheim, Holger L.
Department of Synthetic Materials and Functional Devices (SMFD), Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons299062

Rigvedi, Prajwal
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons299064

Yin, Zihan
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons260837

Srivastava, Abhay Kant
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons260829

Wang, Zhong
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons280954

Gu, Ke
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons259905

Yang, See-Hun
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons259899

Guan, Yicheng
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons245678

Parkin, Stuart S. P.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

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https://doi.org/10.1038/s41467-024-48893-y
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s41467-024-48893-y.pdf
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引用

Zhang, W., Ma, T., Hazra, B. K., Meyerheim, H. L., Rigvedi, P., Yin, Z., Srivastava, A. K., Wang, Z., Gu, K., Zhou, S., Wang, S., Yang, S.-H., Guan, Y., & Parkin, S. S. P. (2024). Current-induced domain wall motion in a van der Waals ferromagnet Fe₃GeTe₂. Nature Communications, 15:. doi:10.1038/s41467-024-48893-y.

引用: https://hdl.handle.net/21.11116/0000-000F-6BF1-9

要旨

The manipulation of spin textures by spin currents is of fundamental and technological interest. A particularly interesting system is the 2D van der Waals ferromagnet Fe₃GeTe₂, in which Néel-type skyrmions have recently been observed. The origin of these chiral spin textures is of considerable interest. Recently, it was proposed that these derive from defects in the structure that lower the symmetry and allow for a bulk vector Dzyaloshinsky-Moriya interaction. Here, we demonstrate current-induced domain wall motion in Fe₃GeTe₂ flakes, in which the maximum domain wall velocity is an order of magnitude higher than those reported in previous studies. In heterostructures with Pt or W layers on top of the Fe₃GeTe₂ flakes, domain walls can be moved via a combination of spin transfer and spin-orbit torques. The competition between these torques leads to a change in the direction of domain wall motion with increasing magnitude of the injected current.