Symmetry-enforced topological Dirac semimetal for giant spin–orbit torque with ultralow power dissipation. - Zheng, Xuan; Peng, Siyang; Chen, Xuejiao; Lao, Bin; Han, Yamin; Gong, Liguang; Tang, Tao; Wu, Keyi; Sun, Yan; Liu, Peitao (National Science Review, 2026)