Fei Wang, Guoyi Shi, Kyoung-Whan Kim, Hyeon-Jong Park, Jae Gwang Jang, Hui Ru Tan, Ming Lin, Yakun Liu, Taeheon Kim, Dongsheng Yang, Shishun Zhao, Kyusup Lee, Shuhan Yang, Anjan Soumyanarayanan, Kyung-Jin Lee, Hyunsoo Yang
The key challenge of spin-orbit torque applications lies in exploring an excellent spin source capable of generating out-of-plane spins while exhibiting high spin Hall conductivity. Here we combine PtTe2 for high spin conductivity and WTe2 for low crystal symmetry to satisfy the above requirements. The PtTe2 /WTe2 bilayers exhibit a high in-plane spin Hall conductivity σs,y ≈ 2.32 × 105 × ħ/2e Ω-1 m-1 and out-of-plane spin Hall conductivity σs,z ≈ 0...
January 19, 2024: Nature Materials