Field-controlled phase-rectified magnonic multiplexer [includes .mif files for use with the micromagnetic simulation tool 'Object-Oriented Micro-Magnetic Framework' (OOMMF)]

Abstract

The mechanism used to alter the features of propagating spin waves is a key component underpinning the functionality of high frequency magnonic devices. Here, using experiment and micromagnetic simulations, we demonstrate the feasibility of a magnonic multiplexer in which the spin-wave beam is toggled between device output branches by the polarity of a small global bias magnetic field. Due to the anisotropy inherent to the dispersion of magnetostatic spin waves, the phase fronts of the output spin waves are asymmetrically tilted relative to the direction of the beam propagation (group velocity). We show how the phase tilts could be (partly) rectified in magnonic waveguides of variable width.