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Spin-Wave Frequency Multiplication by Magnetic Vortex Cores
Cheng-Jie Wang1,2, Yuxin Li1,3,4, Zhe Ding1,4,5
1Laboratory of Spin Magnetic Resonance, School of Physical Sciences, Anhui Province Key Laboratory of Scientific Instrument Development and Application, University of Science and Technology of China, Hefei 230026, China.
Nano Letters
|February 9, 2026
Summary
Researchers observed frequency multiplication in magnetic vortices for the first time. This discovery enables the development of nanoscale spin-based frequency multipliers and miniature frequency combs.
Area of Science:
- Condensed matter physics
- Magnonics
- Nanotechnology
Background:
- Frequency multiplication is crucial for integrating spin-wave devices operating at different frequencies.
- Topological magnetic textures offer advantages in spin-wave applications, but frequency multiplication has not been observed in them.
Purpose of the Study:
- To investigate frequency multiplication in magnetic vortices.
- To explore the potential of topological magnetic textures for spin-wave device applications.
Main Methods:
- Studied magnetization dynamics of magnetic vortices in micron-sized disks.
- Utilized wide-field magnetic imaging.
- Drove vortex core gyration using microwave fields.
Main Results:
- Observed coherent spin-wave harmonics generated by vortex core gyration.
- Demonstrated a universal mechanism where periodic motion of vortex cores creates a frequency comb.
- Confirmed frequency multiplication in magnetic vortex systems.
Conclusions:
- The findings pave the way for nanoscale, tunable spin-based frequency multipliers.
- Opens new possibilities for developing miniature frequency combs.
- Highlights the potential of magnetic vortices in advanced frequency generation applications.
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