Here, we research a novel cavity magnomechanical system, where magnon driven by a microwave field couples with a phonon mode with a nonlinear magneostrictive interaction (radiation pressure-like). Based on this interaction, we numerically demonstrate PT-symmetric chaos in this system. With only one monochrome driving, the chaotic threshold is lowered to a rather low levels, this is due to the dynamical enhancement of nonlinearity in the PT-symmetry broken phase. Moreover, by simply manipulating the phase transition between PT-symmetry phase and PT-symmetry broken phase, we can switch the system between into and out of chaotic regimes. Our work may broaden the cavity magnomechanics and provide a promising application for magnetic chaos-related security communications.
@article{arxiv.1809.09309,
title = {PT-Symmetric magnetic Chaos in cavity magnomechanics},
author = {Mei Wang and Duo Zhang and Yu-Ying Wu and Tai-Shuang Yin and Zhao-Yu Sun},
journal= {arXiv preprint arXiv:1809.09309},
year = {2018}
}