SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 23: Poster Magnetism I
MA 23.75: Poster
Dienstag, 28. März 2023, 17:00–19:00, P1
In Stitu Inverse Design for Magnonic Logic Devices — •Malte Koster1, Philipp Pirro1, and Georg von Freymann1,2 — 1Physics Departement and Research Center OPTIMAS - Technical University of Kaiserslautern, 67663 Kaiserslautern, Germany — 2Fraunhofer Institute for Industrial Mathematics ITWM, 67663 Kaiserslautern, Germany
The need for fast and energy-efficient computing devices is currently a topic of great interest. Magnonic logic devices could offer a promising solution to this need. Due to the intrinsic nonlinearity of spin waves, novel approaches to computation arise in a single logic gate. At the same time, the nonlinear nature makes the design of such devices particularly challenging. We propose a method for inverse design of magnetic logic gates in structured or unstructured yttrium-iron-garnet film samples by using thermal landscapes.
In this design approach, the desired function is specified and the design is modified until it is achieved. The thermal landscapes are created using a laser whose intensity distribution on the sample is arbitrarily modified via a spatial light modulator. The resulting local heating modifies the magnetization landscape. The function of the device is determined using a vector network analyzer. Compared to inverse design via micromagnetic simulations [1], our approach promises significantly higher speed as well as direct proof of functionality in real applications.
[1]Wang, Q et.al. Inverse-design magnonic devices. Nat Commun. 12, 2636 (2021)