spinwaves
Spin waves are collective oscillations of the magnetic moments in ordered magnetic materials. They arise from the exchange and dipolar interactions that align spins and can propagate through a material as waves of spin orientation. In quantum theory, these excitations are quantized as magnons, bosonic quasiparticles. Spin waves occur in ferromagnets, antiferromagnets, ferrimagnets and in nanostructures, where they can be guided and manipulated for information transport.
Classically, spin-wave dynamics are described by the Landau-Lifshitz-Gilbert equation for the magnetization. Small deviations from a
Experimental observation relies on methods like inelastic neutron scattering for bulk samples, Brillouin light scattering and
Damping, characterized by the Gilbert damping parameter, determines magnon lifetimes and propagation lengths. Spin waves underpin