Journal
NATURE PHYSICS
Volume 11, Issue 6, Pages 487-U151Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHYS3325
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Funding
- DFG priority program 'Spin Caloric Transport' [SPP 1538, VA 735/1-2]
- Nano Structuring Center (NSC) of the TU Kaiserslautern
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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(1-5), filtering(6-8) and short-time data storage(9). 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.
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