Berlin 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 31: Magnonics I
MA 31.2: Vortrag
Mittwoch, 14. März 2018, 15:30–15:45, H 0110
Direct observation of Sub-100 nm spin-wave propagation in magnonic waveguides — •Nick Träger1, Paweł Gruszecki2, Filip Lisiecki3, Johannes Förster1, Markus Weigand1, Piotr Kuswik2,3, Janusz Dubowik3, Gisela Schütz1, Maciej Krawczyk2, and Joachim Gräfe1 — 1MPI for Intelligent Systems, Stuttgart — 2Adam Mickiewicz University, Poznan — 3Institute of Molecular Physics, Poznan
In magnonics research, capabilities of data processing mediated by spin-waves are of current interest and promise beyond-CMOS technologies, providing efficient guiding of information between logic elements. Here, we investigate 350, 700 and 1400 nm wide, and 50 nm thin Py stripes as spin-wave guides. Continuous wave RF fields were generated in a 2 µm wide antenna to excite spin waves into these Py stripes. Using magnetic scanning x-ray microscopy (MAXYMUS@BESSY) with 18 nm spatial and 35 ps temporal resolution, we directly observe highly oriented emission and propagation of sub-100 nm spin-wave modes in these wave guides. Furthermore, we tested that they are capable of simultaneously carrying multiple modes and explored the dispersion behaviour by burst experiments. Thus, a rich data transmission scenario was created, unveiling the interleaving mode behaviour during these information pulses. Non-dispersive propagation was observed for the wave guide length of 12 µm, indicating high transmission velocity with uniform characteristics that are promising for future technical applications.