Single-shot electrical detection of short-wavelength magnon pulse transmission in a magnonic thin-film waveguide

Year: 2025

Type: article

Abstract: The advance of magnon spintronics requires understanding of time-domain magnon pulse transmission in order to develop high-speed information processing protocols. In this work, we demonstrate single-shot electrical detection of narrow-band magnon pulse transmission in a yttrium iron garnet thin-film delay line. The high signal-to-background ratio of magnon transmission band allows us to directly probe the magnon transmission electrically using a fast oscilloscope and to study its spectral evolution using Fast Fourier Transform (FFT) of the time-domain transmitted signal. At elevated input power, we show a magnon transmission reduction and a spectral distortion, which can be understood by the nonlinear magnon excitation in the transmission band defined by the antenna geometry. In addition, we also find that the higher- (lower-) frequency magnon spectral component exhibits a lower (higher) magnon group velocity, showing a dispersion agreeing with the Damon-Eshbach dependence. Our results provide important guidance of magnon pulse engineering for their applications in spin wave computing and coherent magnon information processing.

Source: npj Spintronics

DOI: 10.1038/s44306-025-00072-5

Authors: Moojune Song, Jinho Lim, Wei Zhang, Dmytro A. Bozhko, Ralu Divan, Axel Hoffmann, Kab-Jin Kim, Valentine Novosad, Yi Li

Institutions: Argonne National Laboratory, University of Illinois Urbana-Champaign, University of North Carolina at Chapel Hill, University of Colorado Colorado Springs, Center for Nanoscale Materials, Korea Advanced Institute of Science and Technology

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,190

Funders: National Science Foundation, U.S. Department of Energy, National Research Foundation, Ministry of Science, ICT and Future Planning, National Research Foundation of Korea, Korea Advanced Institute of Science and Technology, Ministry of Science and ICT, South Korea, Office of Science, Division of Materials Research, Division of Electrical, Communications and Cyber Systems, Basic Energy Sciences, Air Force Office of Scientific Research

OpenAlex ID: W4409039541