Prof. Dr. Dirk Grundler
Lehrstuhl für Physik funktionaler Schichtsysteme, Technische Universität München,
Physik Department E10, James-Franck-Straße 1, D-85748 Garching b. München, Germany
Magnonics – shrinking microwaves to the nanoscale
- 24.07.2013 14:00 Uhr
- PGI Hörsaal
Thin-film ferromagnets periodically patterned on the micro- and nanoscale have been shown to form magnonic crystals (MCs), i.e., artificial crystals exhibiting tailored band structures for spin waves (magnons). Their functionality goes beyond e.g. photonic and plasmonic crystals for electromagnetic waves in that the magnetic unit cell allows one to reconfigure the band structure via different non-volatile remanent configurations. MCs thus provide interesting building blocks for microwave applications aiming at both information transmission and processing using spin waves at the nanoscale. To reach this goal, the coupling efficiency between long-wavelength GHz radiation and short-wavelength spin waves needs to be improved. MC-based transducers, i.e., magnonic grating couplers, are shown to offer a versatile solution to this long-existing problem.
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