Unconventional Spin-Orbit Torque in Transition Metal Dichalcogenide-Ferromagnet Bilayers from First-Principles Calculations

Motivated by recent observations of unconventional out-of-plane dampinglike torque in WTe₂/Permalloy bilayer systems, we calculate the spin-orbit torque generated in two-dimensional transition metal dichalcogenide (TMD)–ferromagnet heterostructures using first-principles methods and linear response theory.