Spin Injection Efficiency at Metallic Interfaces Probed by THz Emission Spectroscopy

  title={Spin Injection Efficiency at Metallic Interfaces Probed by THz Emission Spectroscopy},
  author={Jacques Hawecker and Thi Huong Dang and E. Rongione and James Boust and Sophie Collin and J. M. George and Henri-Jean Drouhin and Yannis Laplace and Romain Grasset and Jingwei Dong and Juliette Mangeney and Jerome Tignon and Henri Jaffr{\`e}s and Luca Perfetti and Sukhdeep S. Dhillon},
  journal={Advanced Optical Materials},
Terahertz (THz) spin‐to‐charge conversion has become an increasingly important process for THz pulse generation and as a tool to probe ultrafast spin interactions at magnetic interfaces. However, its relation to traditional, steady state, ferromagnetic resonance techniques is poorly understood. Here, nanometric trilayers of Co/X/Pt (X = Ti, Au or an Au:W alloy) are investigated as a function of the “X” layer thickness, where THz emission generated by the inverse spin Hall effect is compared to… 

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