Current-induced switching of a van der Waals ferromagnet at room temperature

Recent discovery of emergent magnetism in van der Waals magnetic materials (vdWMM) has broadened the material space for developing spintronic devices for energy-efficient computation. While there has been appreciable progress in vdWMM discovery, a solution for non-volatile, deterministic switching of vdWMMs at room temperature has been missing, limiting the prospects of their adoption into commercial spintronic devices. Here, we report the first demonstration of current-controlled non-volatile, deterministic magnetization switching in a vdW magnetic material at room temperature. We have achieved spin-orbit torque (SOT) switching of the PMA vdW ferromagnet Fe 3 GaTe 2 using a Pt spin-Hall layer up to 320 K, with a threshold switching current density as low as J_sw= 1.69 × 10 6 A cm −2 at room temperature. We have also quantitatively estimated the anti-damping-like SOT efficiency of our Fe 3 GaTe 2 /Pt bilayer system to be ξ_DL=0.093 , using the second harmonic Hall voltage measurement technique. These results mark a crucial step in making vdW magnetic materials a viable choice for the development of scalable, energy-efficient spintronic devices.