A magnonic directional coupler for integrated magnonic half-adders

Autor(en)

Q. Wang, M. Kewenig, M. Schneider, R. Verba, F. Kohl, B. Heinz, M. Geilen, M. Mohseni, B. Lägel, F. Ciubotaru, C. Adelmann, C. Dubs, S. D. Cotofana, O. V. Dobrovolskiy, T. Brächer, P. Pirro, A. V. Chumak

Abstrakt

Magnons, the quanta of spin waves, could be used to encode information in beyond-Moore computing applications, and magnonic device components, including logic gates, transistors and units for non-Boolean computing, have already been developed. Magnonic directional couplers, which can function as circuit building blocks, have also been explored, but have been impractical because of their millimetre dimensions and multimode spectra. Here, we report a magnonic directional coupler based on yttrium iron garnet that has submicrometre dimensions. The coupler consists of single-mode waveguides with a width of 350 nm. We use the amplitude of a spin wave to encode information and to guide it to one of the two outputs of the coupler depending on the signal magnitude, frequency and the applied magnetic field. Using micromagnetic simulations, we also propose an integrated magnonic half-adder that consists of two directional couplers and we investigate its functionality for information processing within the magnon domain. The proposed half-adder is estimated to consume energy in the order of attojoules.

Organisation(en)

Nanomagnetismus und Magnonik

Externe Organisation(en)

Technische Universität Kaiserslautern, National Academy of Sciences of Ukraine (NASU), Johannes Gutenberg-Universität Mainz, Interuniversity Microelectronics Centre, Innovent e.V. Technologieentwicklung Jena, Delft University of Technology

Journal

Nature Electronics

Band

3

Seiten

765–774

Anzahl der Seiten

10

ISSN

2520-1131

DOI

https://doi.org/10.1038/s41928-020-00485-6

Publikationsdatum

10-2020

Peer-reviewed

Ja

ÖFOS 2012

210003 Nanoelektronik

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Instrumentation, Electrical and Electronic Engineering

Sustainable Development Goals

SDG 7 – Bezahlbare und saubere Energie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/7af668c4-bed8-4fb7-971d-a7220be32537