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In particular, featured topics include theoretical modeling of spin-wave dynamics,[[1], [3], [5]] magnonic crystals,[[6], [8], [10]] magnetic bilayers,[11] developments in spin-wave sensing[[6], [12]] and spin-wave computing,[[13]] hybrid magnonic systems,[[3], [15], [17]] interactions between spin waves and topological spin textures,[[19]] nuclear spin waves,[21] and novel theoretical approaches to the dissipative nature of magnons in magnetic and hybrid magnonic systems.[22] The optimization of magnonic devices critically relies on a comprehensive understanding of the spin-wave properties, which can be developed through a combination of theoretical modeling and experimental advancements in spin-wave sensing techniques. Magnonics is an exciting and rapidly growing field revolving around the study and manipulation of magnons, the low-lying collective excitations of magnetically ordered systems. Consequently, numerous efforts are focused on developing spin-wave-based approaches to information processing that encode information in the amplitude and phase of spin waves and manipulate it via spin-wave gates and spin-wave interferometers. [Extracted from the article]

The theoretical study of one-dimensional-infinite systems of elastically coupled parallel waveguides has established the existence of band structures with pseudo-spin characteristics. Those systems, which are named ϕ -bits, have been shown to exhibit a spinor character associated with directional degrees of freedom, which makes them potential quantum mechanical analogs. The realization of such systems is challenged by the three-dimensional and finite nature of physical elastic waveguides. We address this problem, and with it the design of ϕ -bits in general, by developing finite elements models based on COMSOL Multiphysics®. We model systems of one or more coupled finite length Al rods. The analysis of their dispersion relations, transmission spectra, and amplitudes establishes their ϕ -bit character. For three coupled finite length Al rods, the elastic field is associated with wavefunctions, tensor products of a spinor part related to the directional degrees of freedom, and an orbital angular momentum part representing the phase of the coupled waveguides. We demonstrate the possibility of creating non-separable states between these degrees of freedom. [ABSTRACT FROM AUTHOR]