Figure 1
From: Input-driven chaotic dynamics in vortex spin-torque oscillator
(a) Schematic illustration of vortex spin torque oscillator and dynamics of the vortex core induced by a direct current (DC) and random magnetic field. The DC induces an oscillation of the vortex core around the disk center whereas the random magnetic field modulates the oscillation amplitude. (b) Evolution of the normalized amplitude s in the presence of the current \(I=5\) mA. The inset shows the dynamics of the x component and y component of the magnetic vortex core normalized by the radius of the magnetic vortex core.
