Science Advances

Supplementary Materials

This PDF file includes:

  • section S1. Figure caption of movie S1.
  • section S2. Photon emission from graphene affected by swift electrons.
  • section S3. Energy spectrum of induced charges on graphene.
  • section S4. Dispersion relation and propagation length/time of graphene plasmons.
  • section S5. Analytical EEL spectrum.
  • section S6. Comparison of EEL spectra between previous work and our result.
  • section S7. Total energy of emitted photons.
  • section S8. Numerical implementation with Sommerfeld integration.
  • fig. S1. Dispersion curve of TM graphene plasmons.
  • fig. S2. Propagation time of TM graphene plasmons as a function of frequency.
  • fig. S3. EEL spectrum when an electron normally incident on an ideal lossless graphene layer.
  • fig. S4. EEL spectra for an electron normally incident on graphene.
  • References (39–52)

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Other Supplementary Material for this manuscript includes the following:

  • movie S1 (.mov format). Time evolution of 2D plasmons launched by swift electrons.

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