Ultrafast Spin Dynamics of Pt/Gd 19 (Co 0.8 Fe 0.2) 81 /Ta Heterostructure Investigated by Double-Pump Terahertz Emission Spectroscopy. - Li, Changwei; Lu, Bo; Yu, Nuoxi; Li, Zhangshun; Xu, Haoran; Zhang, Huiping; Jin, Zuanming (Nanomaterials (2079-4991), 2026)