Magnon Torque Transferred into a Magnetic Insulator through an Antiferromagnetic Insulator

Electrical spin-orbit torque (SOT) in magnetic insulators (MI) has been intensively studied due to its advantages in spin-orbitronic devices with ultralow energy consumption. However, the magnon torque in the MIs, which has the potential to further lower the energy consumption, still remains elusive...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2021-10, Vol.11 (11), p.2766
Main Authors: Chen, Zhiren, Chen, Zehan, Zhao, Xiaotian, Cui, Baoshan, Zheng, Hongnan, Liu, Lin, Jia, Wei, Li, Tianhui, Ye, Zhixiang, Qiu, Mingxia, Wang, Ning, Ma, Lei, An, Hongyu
Format: Article
Language:English
Subjects:
antiferromagnetic insulator
Antiferromagnetism
Efficiency
Energy consumption
Energy dissipation
Feasibility studies
Heterostructures
Insulators
Magnetic fields
magnetic insulator
magnon torque
Magnons
Nickel oxides
spin-orbit torque
Torque
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Summary:Electrical spin-orbit torque (SOT) in magnetic insulators (MI) has been intensively studied due to its advantages in spin-orbitronic devices with ultralow energy consumption. However, the magnon torque in the MIs, which has the potential to further lower the energy consumption, still remains elusive. In this work, we demonstrate the efficient magnon torque transferred into an MI through an antiferromagnetic insulator. By fabricating a Pt/NiO/Tm3Fe5O12 heterostructure with different NiO thicknesses, we have systematically investigated the evolution of the transferred magnon torque. We show that the magnon torque efficiency transferred through the NiO into the MI can retain a high value (∼50%), which is comparable to the previous report for the magnon torque transferred into the metallic magnet. Our study manifests the feasibility of realizing the pure magnon-based spin-orbitronic devices with ultralow energy consumption and high efficiency.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano11112766