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Magnon Accumulation in Chirally Coupled Magnets.
Tao Yu1, Yu-Xiang Zhang2, Sanchar Sharma1
1Kavli Institute of NanoScience, Delft University of Technology, 2628 CJ Delft, Netherlands.
Physical Review Letters
|March 29, 2020
Summary
We demonstrate strong chiral coupling between magnons and photons using microwave waveguides and magnetic chains. This enables large magnon accumulations, paving the way for advanced nonlinear and quantum magnonics applications.
Area of Science:
- Quantum physics
- Condensed matter physics
- Nanotechnology
Background:
- Magnonics offers a platform for information processing.
- Controlling magnons is crucial for advanced applications.
- Chiral coupling is key to directional control.
Purpose of the Study:
- To investigate chiral coupling between magnons and photons.
- To explore magnon accumulation in magnetic chains.
- To enable new functionalities in magnonics.
Main Methods:
- Utilizing microwave waveguides with chains of small magnets.
- Employing phased antenna arrays for excitation.
- Analyzing magnon behavior and accumulation.
Main Results:
- Achieved strong chiral coupling between magnons and photons.
- Observed large magnon accumulations at the edge of magnetic chains.
- Demonstrated a novel mechanism for magnon control.
Conclusions:
- The demonstrated mechanism promises new functionalities in nonlinear and quantum magnonics.
- This work advances the control of magnons for future devices.
- Chiral coupling provides a powerful tool for magnonic systems.
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