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- Title
Optically reconfigurable magnetic materials.
- Authors
Vogel, Marc; Chumak, Andrii V.; Waller, Erik H.; Langner, Thomas; Vasyuchka, Vitaliy I.; Hillebrands, Burkard; von Freymann, Georg
- Abstract
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.
- Subjects
SPIN waves; SPIN excitations; RESISTANCE heating; MAGNETIC materials; MAGNETIZATION
- Publication
Nature Physics, 2015, Vol 11, Issue 6, p487
- ISSN
1745-2473
- Publication type
Article
- DOI
10.1038/nphys3325