1. Slow-Wave-Based Nanomagnonic Diode
- Author
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Moritz Geilen, Michel Hehn, Matthieu Bailleul, Matías Grassi, Thomas Brächer, Morteza Mohseni, Yves Henry, Philipp Pirro, Damien Louis, and D. Stoeffler
- Subjects
Physics ,Signal processing ,business.industry ,Wave propagation ,Bilayer ,Magnon ,Physics::Optics ,General Physics and Astronomy ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Optics ,Ferromagnetism ,Spin wave ,0103 physical sciences ,Condensed Matter::Strongly Correlated Electrons ,010306 general physics ,0210 nano-technology ,business ,Realization (systems) ,Diode - Abstract
Nonreciprocal wave propagation is important for signal processing and wave-based computing, but has not been realized in spin-wave devices. The authors engineer such nonreciprocity for spin waves in a transversely magnetized ferromagnetic bilayer so that the waves completely stop in one direction while still propagating with significant velocity in the opposite one. Electrical and optical measurements are combined with analytical and numerical modeling to provide a picture of the chiral mode hybridization responsible for this phenomenon. This work is an experimental realization of a magnonic diode and paves the way for designing complex spin-wave devices required for magnon computing.
- Published
- 2020
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