Autoresonant switching of NPs

Autoresonant switching of the magnetization in single-domain nanoparticles: Two-level theory.
Guillaume Klughertz, Lazar Friedland, Paul-Antoine Hervieux and Giovanni Manfredi

Phys. Rev. B 91, 104433 (2015)

Amplitude of the |A2|2 level in the two-parameter space (ε,a1−0.5), obtained from numerical solutions of Eqs. (14) and (15). Regions where |A2|2 is larger are those of efficient population transfer (i.e., efficient magnetization switching).