Wave-based platforms for unconventional computing require a controlled yet adjustable flow of wave information, integrated with non-volatile data storage. Spin waves are ideal for such platforms due to their inherent nonreciprocal properties and direct interaction with magnetic storage. This study demonstrates how spin-wave nonreciprocity, induced by dipolar interactions in nanowaveguides with antiparallel out-of-plane magnetization, enables the realization of a spin-wave circulator for unidirectional signal transport and advanced routing. The device’s functionality can be continuously reconfigured using a magnetic domain wall with adjustable position, offering non-volatile control over output and nonreciprocity. These features are illustrated using a spinwave directional coupler, validated through micromagnetic simulations and analytical models, which also support the functions of a waveguide crossing, tunable power splitter, and frequency multiplexer. The proposed domain-wall-based reconfiguration, combined with nonlinear spin-wave behavior, holds promise for developing a nanoscale, nonlinear wave computing platform with self-learning capabilities.
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