Publication Date:
2015-06-03
Description:
Nature Physics 11, 487 (2015). doi:10.1038/nphys3325 Authors: Marc Vogel, Andrii V. Chumak, Erik H. Waller, Thomas Langner, Vitaliy I. Vasyuchka, Burkard Hillebrands & Georg von Freymann Structuring 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.
Print ISSN:
1745-2473
Electronic ISSN:
1745-2481
Topics:
Physics
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