PT-Symmetric magnetic Chaos in cavity magnomechanics

TL;DR

This paper demonstrates PT-symmetric chaos in a cavity magnomechanical system, showing how phase transitions can control chaos, with potential applications in secure communications.

Contribution

It introduces a novel cavity magnomechanical system exhibiting PT-symmetric chaos controlled by phase transitions, a new approach in magnetic chaos research.

Findings

PT-symmetric chaos demonstrated numerically.

Chaotic threshold lowered by nonlinear enhancement.

Chaos controllable via PT-phase manipulation.

Abstract

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.