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MA: Fachverband Magnetismus
MA 45: Magnonics I
MA 45.2: Vortrag
Donnerstag, 19. März 2020, 09:45–10:00, HSZ 401
Realization of a nanoscale magnonic directional coupler for all-magnon circuits — •Qi Wang1, Martin Kewenig1, Michael Schneider1, Roman Verba2, Björn Heinz1,3, Moritz Geilen1, Morteza Mohseni1, Bert Lägel4, Florin Ciubotaru5, Christoph Adelmann5, Carsten Dubs6, Sorin Cotofana7, Thomas Brächer1, Philipp Pirro1, and Andrii Chumak1,8 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany — 2Institute of Magnetism, Kyiv, Ukraine — 3Graduate School Materials Science in Mainz, Mainz, Germany — 4Nano Structuring Center, Technische Universität Kaiserslautern, Kaiserslautern, Germany — 5Imec, Leuven, Belgium — 6INNOVENT e.V., Technologieentwicklung, Jena, Germany — 7Department of Quantum and Computer Engineering, Delft University of Technology, Delft, The Netherlands — 8Faculty of Physics, University of Vienna, Vienna, Austria
Magnonics is a promising alternative in view of beyond-Moore computing in which information is carried by magnons instead of electrons. However, the major challenge in magnon-based computing is the transition from a single logic unit to an integrated circuit. Here, we report a nanoscale directional coupler fabricated from an 85 nm thick Yttrium Ion Garnet film, which consists of two coupled waveguides with a width of 350 nm separated by a gap of 320 nm. The directional coupler can be used as a universal unit for all-magnon circuits, working as a multiplexer, a AND gate and an XOR gate. These functions are demonstrated by Brillouin light scattering spectroscopy.