A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Spin Torque Study of the Spin Hall Conductivity and Spin Diffusion Length in Platinum Thin Films with Varying Resistivity
2016
Physical Review Letters
Preserved Fulltext
Other Versions
We report measurements of the spin torque efficiencies in perpendicularly-magnetized Pt/Co bilayers where the Pt resistivity ρ_Pt is strongly dependent on thickness t_Pt . The damping-like spin Hall torque efficiency per unit current density, ξ^j_DL , varies significantly with t_Pt, exhibiting a peak value ξ^j_DL=0.12 at t_Pt = 2.8 - 3.9 nm. In contrast, ξ^j_DL/ρ_Pt increases monotonically with t_Pt and saturates for t_Pt > 5 nm, consistent with an intrinsic spin Hall effect mechanism, in which
doi:10.1103/physrevlett.116.126601
pmid:27058088
fatcat:5u5mpsxjsjbhvgg5a7dtaocyoi