  The design of a microstructured, fully functional spin-wave majority gate is
presented and studied using micromagnetic simulations. This all-magnon logic
gate consists of three-input waveguides, a spin-wave combiner and an output
waveguide. In order to ensure the functionality of the device, the output
waveguide is designed to perform spin-wave mode selection. We demonstrate that
the gate evaluates the majority of the input signals coded into the spin-wave
phase. Moreover, the all-magnon data processing device is used to perform logic
AND-, OR-, NAND- and NOR- operations.
