Domain wall nucleation, propagation and annihilation in coupled bent ferromagnetic nanofibers with rotating local input fields

Abstract

Magnetic nanofibers can be used for data transport and storage, especially related to the emerging field of neuromorphic computing. Domain walls in bent nanofibers can nucleate, e.g., due to rotating local magnetic fields. Their propagation through bent nanofibers, however, depends on the bending direction in correlation to the rotational orientation of the magnetic field, making such nanofibers suitable for semi-deterministic logic operations. Here we report on domain wall nucleation, propagation and annihilation in bent nanowire networks with multiple data inputs and outputs. Our results show the influence of the bending radii on domain wall nucleation and propagation, leading to suggestions for possible realization of multi-level systems for logic operations.