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A nonvolatile magnon field effect transistor at room temperature.
Jun Cheng1, Rui Yu1,2, Liang Sun1
1National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, and Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, PR China.
Nature Communications
|October 30, 2024
Summary
Researchers developed a novel nonvolatile magnonic field effect transistor. This spin-based device operates at room temperature, offering a potential solution to the heat issues hindering the information industry.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- The information industry faces significant heat challenges due to rapid growth, necessitating non-charge-based technologies.
- Magnonics, utilizing magnons for spin information transport without electron movement, shows promise for post-Moore electronics.
- Developing a magnonic equivalent of the field-effect transistor is crucial but challenging.
Purpose of the Study:
- To demonstrate a nonvolatile, three-terminal lateral magnon field-effect transistor.
- To investigate room-temperature operation of a magnonic transistor.
- To explore nonvolatile control of magnon transport.
Main Methods:
- Fabrication of a device using a ferrimagnetic insulator (Y3Fe5O12) on a ferroelectric substrate (PMN-PT or PZT).
- Integration of three platinum stripes as injector, gate, and detector on the Y3Fe5O12 layer.
- Application of gate voltage pulses to modulate magnon transport.
Main Results:
- Successful demonstration of a nonvolatile three-terminal lateral magnon field-effect transistor operating at room temperature.
- Achieved nonvolatile regulation of magnon transport in Y3Fe5O12 via gate voltage pulses.
- Observed a high on/off ratio for magnon transport modulation.
Conclusions:
- The developed device provides a viable magnonic field-effect transistor.
- Nonvolatile control of magnon transport is demonstrated at room temperature.
- This work lays the foundation for energy-efficient, spin-based electronic devices.
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