“Current-induced switching of perpendicularly-magnetized magnetic layers using spin torque from the spin Hall effect.” L. Q. Liu, O. J. Lee, T. J. Gudmundsen, D. C. Ralph and R. A. Buhrman. Phys. Rev. Lett. 109, 096602 (2012). https://doi.org/10.1103/PhysRevLett.109.096602

“Current-driven magnetization reversal and spin-wave excitations in Co/Cu/Co pillars,” J. A. Katine, F. J. Albert, R. A Buhrman, E. B. Myers, and D. C. Ralph, Phys. Rev. Lett. 84, 3149-3152 (2000): https://doi.org/10.1103/PhysRevLett.84.3149

“Spin-Torque Ferromagnetic Resonance Induced by the Spin Hall Effect,” Luqiao Liu, Takahiro Moriyama, D. C. Ralph, and R. A. Buhrman, Phys. Rev. Lett. 106, 036601 (2011).https://doi.org/10.1103/PhysRevLett.106.036601