Generation of out-of-plane polarized spin current by non-uniform oxygen octahedral tilt/rotation

• DOI: 10.1038/s41467-024-51820-w
• Publication Date: 2024-08-24T14:02:18Z
• Authors: Furong Han; Jing Zhang; Fan Yang; Bo Li; Yu He; Guansong Li; Youxiang Chen; Qisheng Jiang; Yan Huang; Hui Zhang; Jine Zhang; Huaiwen Yang; Huiying Liu; Qinghua Zhang; Hao Wu; Jingsheng Chen; Weisheng Zhao; Xian-Lei Sheng; Jirong Sun; Yue Zhang
• Keywords: 0301 basic medicine; Science; Q; 0210 nano-technology; Article

The free-field switching of the perpendicular magnetization by out-of-plane polarized spin current induced spin-orbit torque makes it a promising technology for developing high-density memory and logic devices. materials intrinsically with low symmetry are generally utilized to generate polarization. However, generation engineering has not yet been reported. Here, we demonstrate that paramagnetic CaRuO3 films able crystal symmetry. non-uniform oxygen octahedral tilt/rotation along film's normal direction coupling near interface breaks screw-axis glide-plane symmetries, which gives rise significant current. This can drive field-free high efficiency. Our results offer strategy based on design manipulate could have potential applications in advanced spintronic authors realize perovskite oxide reduced octahedra, efficient magnetization.