Magnetization dynamics of topological defects and the spin solid in a kagome artificial spin ice
Magnetization dynamics of topological defects and the spin solid in a kagome artificial spin ice
We report broadband spin-wave spectroscopy on kagome artificial spin ice (ASI) made of large arrays of interconnected Ni$_{80}$Fe$_{20}$ nanobars. Spectra taken in saturated and disordered states exhibit a series of resonances with characteristic magnetic field dependencies. Making use of micromagnetic simulations, we identify resonances that reflect the spin-solid-state and monopole-antimonopole …