%0 Journal Article
%T Tunable Transient Decay Times in Nonlinear Systems: Application to Magnetic Precession
%A M. G. Phelps
%A K. L. Livesey
%A A. M. Ferona
%A R. E. Camley
%J Physics
%D 2014
%I arXiv
%R 10.1209/0295-5075/109/37007
%X The dynamical motion of the magnetization plays a key role in the properties of magnetic materials. If the magnetization is initially away from the equilibrium direction in a magnetic nanoparticle, it will precess at a natural frequency and, with some damping present, will decay to the equilibrium position in a short lifetime. Here we investigate a simple but important situation where a magnetic nanoparticle is driven non-resonantly by an oscillating magnetic field, not at the natural frequency. We find a surprising result that the lifetime of the transient motion is strongly tunable, by factors of over 10,000, by varying the amplitude of the driving field.
%U http://arxiv.org/abs/1412.8224v3