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Updated: Jun 9, 2025
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
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Breaking Surface-Plasmon Excitation Constraint via Surface Spin Waves
H Y Yuan1,2, Yaroslav M Blanter2
1Institute for Advanced Study in Physics, <a href="https://ror.org/00a2xv884">Zhejiang University</a>, 310027 Hangzhou, China.
Physical Review Letters
|October 25, 2024
Summary
We demonstrate effective excitation of transverse-electric (TE) surface plasmons in 2D materials using a hybrid structure. This breakthrough enables enhanced light-matter interactions for future plasmonic and spintronic devices.
Area of Science:
- Condensed matter physics
- Materials science
- Optoelectronics
Background:
- Surface plasmons in two-dimensional (2D) electron systems are crucial for light-matter applications.
- Exciting transverse-electric (TE) surface plasmons in 2D materials is challenging due to energy-momentum conservation issues.
Purpose of the Study:
- To demonstrate effective excitation and manipulation of TE surface plasmons in the gigahertz to terahertz regime.
- To explore the use of hybrid structures for enhanced plasmonic properties.
Main Methods:
- Utilizing a hybrid dielectric, 2D material, and magnet structure.
- Investigating the role of surface spin waves in plasmon excitation.
- Analyzing reflection spectra to observe plasmon excitation dips.
Main Results:
- TE surface plasmons were effectively excited and manipulated in the gigahertz-terahertz range.
- Surface spin waves provided additional freedom for plasmon excitation, enhancing electric fields.
- Plasmon excitation was observed as a dip in the reflection spectrum.
- Dip characteristics were controllable via electric gating and magnetic fields.
Conclusions:
- The hybrid structure overcomes challenges in TE surface plasmon excitation in 2D materials.
- This work integrates low-dimensional physics, plasmonics, and spintronics.
- It opens new avenues for developing novel plasmonic and spintronic devices.
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