Abstract
We report experimental and theoretical evidence of strong electron-plasmon interaction in -doped single-layer . Angle-resolved photoemission spectroscopy measurements reveal the emergence of distinctive signatures of polaronic coupling in the electron spectral function. Calculations based on many-body perturbation theory illustrate that electronic coupling to two-dimensional carrier plasmons provides an exhaustive explanation of the experimental spectral features and their energies. These results constitute compelling evidence of the formation of plasmon-induced polaronic quasiparticles, suggesting that highly doped transition-metal dichalcogenides may provide a new platform to explore strong-coupling phenomena between electrons and plasmons in two dimensions.
3 More- Received 6 July 2020
- Revised 16 May 2021
- Accepted 17 May 2021
DOI:https://doi.org/10.1103/PhysRevB.103.205152
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