Generating out-of-plane spins in sputtered materials holds immense potential for achieving field-free spin-orbit torque switching in practical applications and mass production. In this work, we present the detection of out-of-plane spins from single-layer ferromagnetic Co layers, which are visualized through helicity-dependent photomapping techniques. Our experiments have shown that out-of-plane spin generation is dependent on the magnetization direction, current density, and Co thickness. Our findings indicate that amorphous sputtered Co can be a promising candidate as an out-of-plane spin source material for industrial massive production.
@article{arxiv.2307.08273,
title = {Visualization of out-of-plane spin generation in mirror symmetry broken Co},
author = {Yakun Liu and Fanrui Hu and Guoyi Shi and Hyunsoo Yang},
journal= {arXiv preprint arXiv:2307.08273},
year = {2023}
}