Login / Signup

Scanning inverse spin Hall effect spectrometer by shorted coaxial probes.

Peiwen LuoZhe WuFei HuangBin PengWenxu Zhang
Published in: The Review of scientific instruments (2023)
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 × 10 5  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.
Keyphrases
  • room temperature
  • density functional theory
  • single molecule
  • ionic liquid
  • high resolution
  • high throughput
  • transition metal
  • healthcare
  • mental health
  • molecular dynamics
  • small molecule
  • living cells
  • electron microscopy