Nanomagnonics based on artificial spin ice

The term “artificial spin ice” (ASI) refers to a class of magnetic metamaterials where magnetic domains can be mapped onto a spin-lattice model. Here, we present broadband ferromagnetic resonance and Brillouin light scattering measurements of ASI and correlate the experimental findings with micromagnetic simulations. We focus on the angular-dependent spin dynamics of different types of ASI made of one single material and bicomponent ASIs composed of two sub-lattices made of dissimilar materials. Our results show that the interaction and the resonant dynamics in ASI can be tuned, not only by the field, geometry and orientation of the lattice, but also by the proper choice of the materials.