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Related Concept Videos

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Related Experiment Video

Updated: May 14, 2026

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

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Published on: September 2, 2016

Experimental verification of comparability between spin-orbit and spin-diffusion lengths.

Yasuhiro Niimi1, Dahai Wei, Hiroshi Idzuchi

  • 1Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8581, Japan. niimi@issp.u-tokyo.ac.jp

Physical Review Letters
|February 7, 2013
PubMed
Summary

Spin-orbit lengths and spin diffusion lengths in noble metals are comparable, as confirmed by weak antilocalization and lateral spin valve measurements. The Elliott-Yafet mechanism governs these lengths, particularly in copper.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Spintronics

Background:

  • Spin-orbit interaction is crucial for spintronic devices.
  • Comparing spin-orbit length and spin diffusion length is essential for understanding spin dynamics.

Purpose of the Study:

  • To experimentally verify the comparability of spin-orbit lengths and spin diffusion lengths.
  • To investigate the dominant mechanism governing these lengths in noble metals.

Main Methods:

  • Weak antilocalization measurements to determine spin-orbit lengths.
  • Lateral spin valve measurements to determine spin diffusion lengths.
  • Disorder dependence studies on copper's spin-orbit length.

Main Results:

  • Spin-orbit lengths are comparable to spin diffusion lengths in noble metals.
  • Both lengths are significantly larger than values from spin torque ferromagnetic resonance.
  • Copper's spin-orbit length shows linear dependence on the diffusion coefficient.

Conclusions:

  • Weak antilocalization and lateral spin valve methods yield comparable spin length scales.
  • The Elliott-Yafet mechanism is dominant for both spin-orbit and spin diffusion lengths.
  • Experimental validation supports the unified understanding of spin transport mechanisms.