Electrical detection of spin pumping in van der Waals ferromagnetic Cr2Ge2Te6 with low magnetic damping

Nature Communications

Article

Yuan Huang¹  Qinghua Zhang²  Hongxiang Wei²  Chen Cheng³  Jing Dong³  Lin Gu³  Guibin Lan³  Yu Zhang³  Ke Jia³  Wenqing He³  Jiafeng Feng³  Jinwu Wei⁴  Hongjun Xu⁵  Youguo Shi⁶  Caihua Wan⁶  Guoqiang Yu⁶  Xiufeng Han⁶  Guangyu Zhang⁶  Qiming Shao⁷  Zhe Yuan⁸  Congli He⁹  Mingliang Zhu^1,10  Shouguo Wang^1,11  Michael Coey^1,12  Fanqi Meng^1,13 

[1] Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, 100081, Beijing, China;Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190, Beijing, China;Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190, Beijing, China;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China;Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190, Beijing, China;Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology, Lanzhou University, 730000, Lanzhou, China;Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190, Beijing, China;Songshan Lake Materials Laboratory, 523808, Dongguan, Guangdong, China;Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190, Beijing, China;Songshan Lake Materials Laboratory, 523808, Dongguan, Guangdong, China;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China;Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, Kowloon, China;Department of Physics, Beijing Normal University, 100875, Beijing, China;Institute of Advanced Materials, Beijing Normal University, 100875, Beijing, China;Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 315201, Ningbo, China;School of Materials Science and Engineering, Anhui University, 230601, Hefei, China;School of Physics and CRANN, Trinity College, 2, Dublin, Ireland;State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China;

关键词: ;   

DOI  :  10.1038/s41467-023-39529-8

 received in 2022-04-29, accepted in 2023-06-15,  发布年份 2023

来源: Springer

【 摘 要 】

The discovery of magnetic order in atomically-thin van der Waals materials has strengthened the alliance between spintronics and two-dimensional materials. An important use of magnetic two-dimensional materials in spintronic devices, which has not yet been demonstrated, would be for coherent spin injection via the spin-pumping effect. Here, we report spin pumping from Cr2Ge2Te6 into Pt or W and detection of the spin current by inverse spin Hall effect. The magnetization dynamics of the hybrid Cr2Ge2Te6/Pt system are measured, and a magnetic damping constant of ~ 4–10 × 10−4 is obtained for thick Cr2Ge2Te6 flakes, a record low for ferromagnetic van der Waals materials. Moreover, a high interface spin transmission efficiency (a spin mixing conductance of 2.4 × 1019/m2) is directly extracted, which is instrumental in delivering spin-related quantities such as spin angular momentum and spin-orbit torque across an interface of the van der Waals system. The low magnetic damping that promotes efficient spin current generation together with high interfacial spin transmission efficiency suggests promising applications for integrating Cr2Ge2Te6 into low-temperature two-dimensional spintronic devices as the source of coherent spin or magnon current.

【 授权许可】

CC BY   
© The Author(s) 2023

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