The authors have investigated the possibility of utilizing spin waves forinter- and intra-chip communications, and as logic elements using bothsimulations and experimental techniques. Through simulations it has been shownthat the decay lengths of magnetostatic spin waves are affected most by thedamping parameter, and least by the exchange stiffness constant. The dampingand dispersion properties of spin waves limit the attenuation length to severaltens of microns. Thus, we have ruled out the possibility of inter-chipcommunications via spin waves. Experimental techniques for the extraction ofthe dispersion relationship have also been demonstrated, along withexperimental demonstrations of spin wave interference for amplitude modulation.The effectiveness of spin wave modulation through interference, along with thecapability of determining the spin wave dispersion relationships electricallyduring manufacturing and testing phase of chip production may pave the way forusing spin waves in analog computing wherein the circuitry required forperforming similar functionality becomes prohibitive.
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