通过反铁磁绝缘体传递到磁绝缘体中的马格农扭矩。

Magnon Torque Transferred into a Magnetic Insulator through an Antiferromagnetic Insulator.

作者信息

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

机构信息

College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China.

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.

出版信息

Nanomaterials (Basel). 2021 Oct 20;11(11):2766. doi: 10.3390/nano11112766.

DOI:10.3390/nano11112766

PMID:34835536

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8625957/

Abstract

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.

摘要

由于磁绝缘体（MI）中的电自旋轨道转矩（SOT）在超低能耗的自旋轨道电子器件中具有优势，因此受到了广泛研究。然而，MI中的磁振子转矩虽有可能进一步降低能耗，但仍难以捉摸。在这项工作中，我们展示了通过反铁磁绝缘体有效地将磁振子转矩转移到MI中。通过制备具有不同NiO厚度的Pt/NiO/Tm3Fe5O12异质结构，我们系统地研究了转移磁振子转矩的演变。我们表明，通过NiO转移到MI中的磁振子转矩效率可以保持较高值（约50%），这与之前关于转移到金属磁体中的磁振子转矩的报告相当。我们的研究表明了实现具有超低能耗和高效率的纯磁振子基自旋轨道电子器件的可行性。