We investigate the dynamics of two coupled vortices driven by spin transfer. We are able to
independently control with current and perpendicular field and to detect the respective …

An overview of ferromagnetic nanowire (FMNW) metamaterials is presented. First, FMNW
metamaterials are placed in the historical context of antique composites and 20th Century …

A wide variety of coupled harmonic oscillators exist in nature. Coupling between different
oscillators allows for the possibility of mutual energy transfer between them and the …

Phase locking experiments on vortex based spin transfer oscillators with an external
microwave current are realized. We present clear evidence of synchronization, ie, phase …

We demonstrate experimentally that the characteristics of the ferromagnetic resonance in a
microscopic magnetic system based on a Permalloy/Cu/Pt multilayer can be varied over a …

We investigate the magnetization dynamics in circular Permalloy dots with spatially
separated magnetic vortices interconnected by domain walls (double vortex state). We …

We found from analytical derivations and micromagnetic numerical simulations that there
exist two distinct normal modes in apparently complex vortex gyrotropic motions in two …

We calculated the main dynamic parameters of the spin polarized current induced magnetic
vortex oscillations in nanopillars, such as the range of current density, where vortex steady …

In this paper it is demonstrated micromagnetically the possibility to have high frequency and
high power microwave emission at zero field in magnetic tunnel junctions with an off …

Radiofrequency vortex spin-transfer oscillators based on magnetic tunnel junctions with very
low-resistance area product were investigated. A high power of excitations has been …