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Chin. Phys. B, 2022, Vol. 31(2): 027504    DOI: 10.1088/1674-1056/ac3d83

Spin current transmission in Co1-xTbx films

Li Wang(王力)1,2, Yangtao Su(苏仰涛)1,2, Yang Meng(孟洋)1,2, Haibin Shi(石海滨)1,2, Xinyu Cao(曹昕宇)1,2, and Hongwu Zhao(赵宏武)1,2,3,†
1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China
Abstract  We investigate the spin to charge conversion phenomena in Y3Fe5O12/Pt/Co1-xTbx/Pt multilayers by both the spin pumping and spin Seebeck effects. We find that the spin transport efficiency is irrelevant to magnetization states of the perpendicular magnetized Co1-xTbx films, which can be attributed to the symmetry requirement of the inverse transverse spin Hall effect. Furthermore, the spin transmission efficiency is significantly affected by the film concentration, revealing the dominant role of extrinsic impurity scattering caused by Tb impurity. The present results provide further guidance for enhancing the spin transport efficiency and developing spintronic devices.
Keywords:  spin to charge conversion      perpendicular magnetized ferrimagnetic alloy      inverse spin Hall effect  
Received:  02 October 2021      Revised:  11 November 2021      Accepted manuscript online:  26 November 2021
PACS:  71.20.Eh (Rare earth metals and alloys)  
  72.25.-b (Spin polarized transport)  
  72.25.Hg (Electrical injection of spin polarized carriers)  
  75.50.Gg (Ferrimagnetics)  
Fund: Project supported by the National Key Basic Research Project of China (Grant No. 2016YFA0300600), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB33020300), and the National Natural Science Foundation of China (Grant Nos. 11604375 and 11874416).
Corresponding Authors:  Hongwu Zhao     E-mail:

Cite this article: 

Li Wang(王力), Yangtao Su(苏仰涛), Yang Meng(孟洋), Haibin Shi(石海滨), Xinyu Cao(曹昕宇), and Hongwu Zhao(赵宏武) Spin current transmission in Co1-xTbx films 2022 Chin. Phys. B 31 027504

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