1. Scanning inverse spin Hall effect spectrometer by shorted coaxial probes.
- Author
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Luo, Peiwen, Wu, Zhe, Huang, Fei, Peng, Bin, and Zhang, Wenxu
- Subjects
SPIN Hall effect ,ELECTRON spin ,NUCLEAR spin ,SPECTROMETERS ,COMMUNITIES ,OPTICAL conductivity - Abstract
In this work, a scanning inverse spin Hall effect measurement system based on a shorted coaxial resonator has been built, which provides a high throughput method to characterize spin transport properties. The system is capable of performing spin pumping measurements on patterned samples within an area of 100 × 100 mm
2 . Its capability was demonstrated with Py/Ta bilayer stripes deposited on the same substrate with different thicknesses of Ta. The results show that the spin diffusion length is about 4.2 nm with a conductivity of about 7.5 × 105 Ω−1 m−1 , which leads to the conclusion that the intrinsic mechanism of spin relaxation of Ta is the Elliott–Yafet interactions. The spin Hall angle of Ta is estimated to be about −0.014 at room temperature. The setup developed in this work provides a convenient, efficient, and nondestructive way to obtain the spin and electron transportation characteristics of the spintronic materials, which will fertilize this community by developing new materials and figuring out their mechanism. [ABSTRACT FROM AUTHOR]- Published
- 2023
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