@article{oai:kyutech.repo.nii.ac.jp:00007264,
 author = {Shashank,  Utkarsh and Medwal,  Rohit and Nakamura,  Yoji and Mohan,  John Rex and Nongjai,  Razia and Kandasami,  Asokan and Rawat,  Rajdeep Singh and Asada,  Hironori and Gupta,  Surbhi and Fukuma, Yasuhiro and 福間, 康裕},
 issue = {25},
 journal = {Applied Physics Letters},
 month = {Jun},
 note = {Damping-like torque (DLT) arising from the spin Hall effect (SHE) in heavy metals and their alloys has been widely explored for applications in spin–orbit torque MRAM, auto-oscillations, spin waves, and domain wall motion. In conventional materials, the DLT efficiency is limited by intrinsic properties, while attaining strong spin–orbit coupling and higher spin-charge interconversion, with no compromise to electric properties, is the need of the hour. In this Letter, we report more than 3.5 times increase in DLT efficiency, θDL, of modified Pt-oxide by employing a better approach of low energy 20 keV O+ ion implantation. The highest fluence of O+ implantation (1 × 1017 ions cm−2) in Pt enhanced the DLT efficiency from 0.064 to 0.230 and improved the spin transmission for a smaller trade-off in the longitudinal resistivity (ρPt to ρPt−Oxide) from 55.4 to 159.5 μΩ cm, respectively. The transverse spin Hall resistivity, ρSH, is found to be proportional to the square of the longitudinal resistivity, i.e., ρimpSH∝ρ2imp, implying that the enhanced SHE in O-implanted Pt is due to a side-jumping mechanism. Further, no break in the twofold as well as mirror symmetry of torques from the O-implanted Pt allows the use of spin-torque ferromagnetic resonance-based line shape analysis to quantify such torques.},
 pages = {252406-1--252406-5},
 title = {Highly dose dependent damping-like spin-orbit torque efficiency in O-implanted Pt},
 volume = {118},
 year = {2021},
 yomi = {フクマ, ヤスヒロ}
}