Setting of the magnetic structure of chiral kagome antiferromagnets by a seeded 
spin-orbit torque

Pal, Banabir; Hazra, Binoy K.; Göbel, Börge; Jeon, Jae-Chun; Pandeya, Avanindra K.; Chakraborty, Anirban; Busch, Oliver; Srivastava, Abhay K.; Deniz, Hakan; Taylor, James M.; Meyerheim, Holger; Mertig, Ingrid; Yang, See-Hun; Parkin, Stuart S. P.

doi:10.1126/sciadv.abo5930

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Setting of the magnetic structure of chiral kagome antiferromagnets by a seeded spin-orbit torque

MPS-Authors

/persons/resource/persons262310

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

/persons/resource/persons260878

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

/persons/resource/persons260482

Göbel, Börge
External Organizations;
International Max Planck Research School for Science and Technology of Nano-Systems, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons262335

Jeon, Jae-Chun
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons260876

Pandeya, Avanindra K.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;
International Max Planck Research School for Science and Technology of Nano-Systems, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons265540

Chakraborty, Anirban
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;
International Max Planck Research School for Science and Technology of Nano-Systems, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons260837

Srivastava, Abhay K.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;
International Max Planck Research School for Science and Technology of Nano-Systems, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons259903

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

Taylor, James M.
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons260281

Meyerheim, Holger
Department of Synthetic Materials and Functional Devices (SMFD), 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/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/10.1126/sciadv.abo5930
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Citation

Pal, B., Hazra, B. K., Göbel, B., Jeon, J.-C., Pandeya, A. K., Chakraborty, A., et al. (2022). Setting of the magnetic structure of chiral kagome antiferromagnets by a seeded spin-orbit torque. Science Advances, 8(24): eabo5930. doi:10.1126/sciadv.abo5930.

Cite as: https://hdl.handle.net/21.11116/0000-000A-AF3F-C

Abstract

The current-induced spin-orbit torque switching of ferromagnets has had huge impact in spintronics. However, short spin-diffusion lengths limit the thickness of switchable ferromagnetic layers, thereby limiting their thermal stability. Here, we report a previously unobserved seeded spin-orbit torque (SSOT) by which current can set the magnetic states of even thick layers of the chiral kagome antiferromagnet Mn₃Sn. The mechanism involves setting the orientation of the antiferromagnetic domains in a thin region at the interface with spin currents arising from an adjacent heavy metal while also heating the layer above its magnetic ordering temperature. This interface region seeds the resulting spin texture of the entire layer as it cools down and, thereby, overcomes the thickness limitation of conventional spin-orbit torques. SSOT switching in Mn₃Sn can be extended beyond chiral antiferromagnets to diverse magnetic systems and provides a path toward the development of highly efficient, high-speed, and thermally stable spintronic devices.