Hamiltonian and Lagrangian Dynamical Matrix Approaches Applied to Magnetic Nanostructures

Figure 3

Schematic representation of undamped (in the absence of both Gilbert and current-induced damping) and out-of-equilibrium (in the presence of both Gilbert and current-induced damping) precessions. In this latter case, a limit cycle is described as well since the torques due to the intrinsic dissipation and the spin-transfer-induced one (for a proper intensity and direction of the current) balance each other.