Tunable Transient Decay Times in Nonlinear Systems: Application to Magnetic Precession
Mesoscale and Nanoscale Physics
2015-06-23 v3 Materials Science
Chaotic Dynamics
Abstract
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.
Keywords
Cite
@article{arxiv.1412.8224,
title = {Tunable Transient Decay Times in Nonlinear Systems: Application to Magnetic Precession},
author = {M. G. Phelps and K. L. Livesey and A. M. Ferona and R. E. Camley},
journal= {arXiv preprint arXiv:1412.8224},
year = {2015}
}
Comments
EPL Preprint