Fig. 3: Effect of hot-carrier transfer on the electron dynamics.
From: Ultrafast hot-carrier dynamics in ultrathin monocrystalline gold

a The schematic illustration of hot-electron transfer from Au to TiO2 (right) and the respective energy band diagram (left). b Normalised transient reflection measured for a 10-nm-thick monocrystalline Au MF on SiO2 (purple curves) and on TiO2 (red curves) at a pump fluence F = 3.6 Jm−2 (dashed curves) and F = 5.7 Jm−2 (solid curves). Inset shows the low perturbation ΔR/R measurement at F = 0.4 Jm−2.