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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
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Coupled plasmon-phonon modes in monolayer MoS2.
H M Dong1, Z H Tao1, Y F Duan1
1School of Physical Science and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China.
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|November 21, 2019
Summary
This study reveals strong plasmon-phonon coupling in monolayer MoS2, influencing its optoelectronic properties. This interaction is key for developing novel plasmonic and nanophotonic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Monolayer molybdenum disulfide (MoS2) exhibits unique electronic and optical properties.
- Understanding plasmon-phonon interactions is crucial for advanced device applications.
Purpose of the Study:
- To theoretically investigate plasmon-phonon coupling in suspended and substrate-supported monolayer MoS2.
- To analyze the influence of spin-orbit and electron-optic phonon interactions on coupled modes.
Main Methods:
- Diagrammatic self-consistent field theory was employed.
- Analysis focused on coupled plasmon-phonon and plasmon-surface phonon modes.
Main Results:
- Four coupled plasmon-phonon and four plasmon-surface phonon modes were identified.
- Strong coupling observed between plasmons and optic phonons (MoS2 and substrate) with increasing electron density/wave-vector.
- Optic-like and acoustic-like modes were distinguished.
Conclusions:
- Plasmon-phonon coupling significantly modulates the optoelectronic properties of monolayer MoS2.
- Hybrid plasmon-phonon polaritons are achievable, enabling strong light-matter interactions.
- Findings support the application of MoS2 in novel plasmonic and nanophotonic devices.
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