Figure 4: Hot-carrier energy and momentum-direction distribution.
From: Theoretical predictions for hot-carrier generation from surface plasmon decay
Plasmonic hot-carrier energy and momentum-direction distribution in (a) aluminium (b) silver (c) copper and (d) gold. The radial coordinate in each panel is the carrier energy relative to the Fermi level, with the spherical shell indicating the plasmon (photon) energy, hν, while the angular coordinates correspond to the carrier momentum direction. The asymmetry in electron and hole energies in the noble metals from Fig. 3 is manifested in the radial extent of the corresponding probability clouds here. None of the metals exhibit the isotropic orientation distribution assumed in the Fowler theory.
