Vogel, M.M.VogelChumak, A.V.A.V.ChumakWaller, E.H.E.H.WallerLangner, T.T.LangnerVasyuchka, V.I.V.I.VasyuchkaHillebrands, B.B.HillebrandsFreymann, G. vonG. vonFreymann2022-03-052022-03-052015https://publica.fraunhofer.de/handle/publica/24073710.1038/nphys3325Structuring of materials is the most general approach for controlling waves in solids. As spin waves - eigen-excitations of the electrons' spin system - are free from Joule heating, they are of interest for a range of applications, such as processing, filtering and short-time data storage. Whereas all these applications rely on predefined constant structures, a dynamic variation of the structures would provide additional, novel applications. Here, we present an approach for producing fully tunable, two-dimensionally structured magnetic materials. Using a laser, we create thermal landscapes in a magnetic medium that result in modulations of the saturation magnetization and in the control of spin-wave characteristics. This method is demonstrated by the realization of fully reconfigurable one- and two-dimensional magnonic crystals - artificial periodic magnetic lattices.en530journal article