Berlin 2024 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 20: Poster I
MA 20.11: Poster
Dienstag, 19. März 2024, 16:30–19:00, Poster A
Spin-wave devices for hardware-based computing systems — •Jannis Bensmann1, Dmitrii Raskhodchikov1,2, Kirill O. Nikolaev3, Robert Schmidt1, Johannes Kern1, Shraddha Choudhary1, Vladislav E. Demidov3, Steffen Michaelis de Vasconcellos1, Wolfram H. P. Pernice1,2,4, Sergej O. Demokritov3, and Rudolf Bratschitsch1 — 1University of Münster, Institute of Physics and Center for Nanotechnology, 48149 Münster, Germany — 2University of Münster, Center for Soft Nanoscience, 48149 Münster, Germany — 3University of Münster, Institute of Applied Physics, 48149 Münster, Germany — 4Heidelberg University, Kirchhoff-Institute for Physics, 48149 Münster, Germany
Recently, the advent of artificial intelligence systems has intensified the ever-increasing demand for computational power and driven the exploration of novel approaches to building computational systems. One possibility is hardware-based spin-wave computing. A spin wave characterizes a perturbation of the local magnetization that travels through a magnetic material. Spin waves are energy-efficient, broadband (up to THz), and can have wavelengths down to the nanometer range. We use the material yttrium iron garnet (YIG), which is known for its particularly low damping properties. To probe spin waves, we perform optical measurements such as Brillouin-light-scattering spectroscopy. For validation, we compare our experimental results with micromagnetic simulations. Utilizing nanofabrication techniques, we develop building blocks for spin-wave computing devices.
Keywords: spin waves; spin-wave computing