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Area of Science:

  • Condensed matter physics
  • Materials science
  • Spintronics

Background:

  • Pure spin currents are key for low-dissipation electronics.
  • Electric detection of spin currents is essential for integrating spintronics into current technologies.
  • The inverse spin Hall effect enables electric detection via spin-orbit coupling.

Purpose of the Study:

  • To find materials with improved spin Hall resistivity for efficient spin current detection.
  • To overcome the limitations of noble metals and copper alloys in spin Hall resistivity.

Main Methods:

  • Investigated the spin Hall effect in various materials.
  • Measured spin Hall resistivity (ρSH) at room temperature.

Main Results:

  • Noble metals (Pt, Pd) and Cu-alloys have insufficient spin Hall resistivity.
  • Iridium oxide exhibits a significantly large spin Hall resistivity of approximately 38 μΩ cm.
  • This performance surpasses that of conventional materials.

Conclusions:

  • Iridium oxide is a promising material for spintronics applications.
  • Its high spin Hall resistivity enables efficient electric detection of spin currents.
  • This advancement could lead to more efficient electronic devices.