Nonlinear aspects of Landau–Lifshitz–Gilbert dynamics under circularly polarized field

Abstract Landau–Lifshitz–Gilbert dynamics of a particle under circularly polarized field is reduced to exactly solvable autonomous form. Two or four rotating magnetization modes are possible. Stability, bifurcation diagrams, and existence of quasi-periodic modes are discussed. Connection with Stoner–Wohlfarth theory is shown.