Fig. 1: Coupled electron and phonon dynamics in graphene.
Top row: electron populations, fnk(t) (blue), and hole populations, 1 − fnk(t) (green), mapped onto the band structure at different time snapshots labeled in the panels, with point sizes proportional to the populations. To the left of each panel, we show the carrier populations as a function of energy by averaging over the BZ. Bottom row: change in phonon populations, ΔNνq(t), relative to the initial distribution, shown on the phonon dispersion. The BZ-averaged change in populations is shown to the left of each phonon dispersion plot. At time t = 0, the initial carriers are set to a hot Fermi-Dirac distribution at 4000 K, while the phonons follow a Bose-Einstein distribution at 300 K.
